Help talk:Wiki syntax

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  1. Help talk:Wiki syntax

Wiki syntax is the lightweight markup language used on MediaWiki-based wikis, such as Wikipedia and this wiki itself. Unlike HTML, it’s designed to be easy to read and write, even in its raw form, making content creation accessible to everyone. This page serves as a comprehensive guide for beginners to understand and effectively utilize Wiki syntax. We'll cover the core elements, common formatting techniques, and more advanced features. Understanding Wiki syntax is crucial for contributing meaningfully to this and other wikis.

Basic Formatting

Wiki syntax emphasizes readability. Most formatting is achieved using simple characters rather than complex tags.

Headings

Headings are created using equal signs (=). The number of equal signs determines the heading level.

  • `= Heading 1 =` results in:
   Heading 1
  • `== Heading 2 ==` results in:
   Heading 2
  • `=== Heading 3 ===` results in:
   Heading 3
  • `==== Heading 4 ====` results in:
   Heading 4
  • `===== Heading 5 =====` results in:
   Heading 5
  • `====== Heading 6 ======` results in:
   Heading 6

Headings are vital for structuring your content and improving readability. Use them hierarchically (e.g., don't jump from Heading 2 to Heading 4 without a Heading 3 in between).

Paragraphs

Paragraphs are created simply by leaving a blank line between blocks of text. No special markup is required.

This is the first paragraph.

This is the second paragraph.

Bold and Italic Text

  • Bold text is created using three single quotes (apostrophes) around the text. For example, `This is bold.` displays as This is bold.
  • Italic text is created using two single quotes around the text. For example, `This is italic.` displays as This is italic.
  • 'Bold and italic text is created using five single quotes. For example, `This is bold and italic.''` displays as This is bold and italic.''

Lists

Wiki syntax supports both unordered (bulleted) and ordered (numbered) lists.

        1. Unordered Lists ####

Unordered lists are created using asterisks (*) or plus signs (+) at the beginning of each line.

```wiki

  • Item 1
  • Item 2
  • Item 3

```

renders as:

  • Item 1
  • Item 2
  • Item 3
        1. Ordered Lists ####

Ordered lists are created using numbers followed by a period (.) at the beginning of each line.

```wiki 1. First item 2. Second item 3. Third item ```

renders as:

1. First item 2. Second item 3. Third item

You can also use letters:

```wiki a. First item b. Second item c. Third item ```

renders as:

a. First item b. Second item c. Third item

Line Breaks

To force a line break within a paragraph, use the `
` tag. For example:

This is the first line.
This is the second line.

Horizontal Rules

Horizontal rules (lines) are created using four hyphens (----) on a line by themselves.


Preformatted Text

Preformatted text preserves both spaces and line breaks. It's useful for displaying code or other text where formatting is important. Use the `

` tags:

```wiki
<pre>
This is preformatted text.
It preserves spaces and line breaks.

```

renders as:

``` This is preformatted text. It preserves spaces and line breaks. ```

Links

Links are fundamental to a wiki. Wiki syntax provides several ways to create links.

Internal Links

Internal links point to other pages within the wiki. Use double square brackets ([[ ]]) around the page title. For example, `Help:Contents` creates a link to the Help:Contents page. You can also use a pipe (|) to specify a different link text: `Help Contents` displays as Help Contents. Main Page is an example of an internal link. Special:Search allows you to search the wiki. Special:Random takes you to a random page. Template:Example links to a template.

External Links

External links point to web pages outside the wiki. Use single square brackets ([ ]) around the URL. For example, `Example Website` displays as Example Website.

Link Strategies

When crafting links, consider using descriptive link text. Avoid phrases like "click here." Instead, link directly to the relevant term or concept. For example, instead of "Click here for more information on [Technical Analysis]", use "Learn more about technical analysis".

Images

Images are added using the `options` syntax.

Tables

Tables are created using a specific syntax involving pipes (|) and hyphens (-).

```wiki

Caption
Header 1 Header 2
Cell 1 Cell 2
Cell 3 Cell 4

```

This creates a table with a caption, headers, and cells. The `class="wikitable"` attribute applies a default styling. The `|+` denotes the caption. `|-` denotes a new row. `!` denotes a header cell. `|` separates cells within a row.

Templates

Templates are reusable blocks of Wiki syntax that can be included on multiple pages. They help maintain consistency and reduce redundancy. To use a template, use the `

  1. Template:Infobox Trading Strategy

This article details the use of the `Template:Infobox Trading Strategy` template in MediaWiki. This template is designed to standardize the presentation of information about various trading strategies within a wiki dedicated to financial markets, technical analysis, and trading. It provides a consistent and easily navigable format for users to understand the key characteristics, mechanics, and performance metrics of different strategies. This is crucial for a knowledge base that aims to be both comprehensive and user-friendly.

Purpose

The primary purpose of `Template:Infobox Trading Strategy` is to create a concise, informative summary of a trading strategy on a dedicated page. This allows readers to quickly grasp the core concepts without needing to read lengthy, detailed explanations. It also facilitates comparison between different strategies. The template focuses on providing structured data, aiding in research and understanding, and promoting a standardized approach to documenting strategies. Without such a template, information could be scattered and inconsistent, making it difficult for newcomers to learn and experienced traders to quickly reference key details.

Usage

To use the template, simply include `Template:Infobox Trading Strategy` at the beginning of a page dedicated to a trading strategy. The template uses a series of parameters to populate the infobox with specific information. Here's a breakdown of each parameter:

  • `strategy_name`: (Required) The name of the trading strategy. This should be the common name used to refer to the strategy (e.g., "Moving Average Crossover", "Fibonacci Retracement").
  • `image`: (Optional) A URL to an image illustrating the strategy, such as a chart with the strategy applied. The image should be relevant and informative. Use the `
    File:ImageName.png
    ` format.
  • `image_caption`: (Optional) A caption for the image, providing context or explaining what the image depicts.
  • `type`: (Optional) The category of trading strategy. Examples include "Trend Following", "Mean Reversion", "Breakout", "Scalping", "Day Trading", "Swing Trading", "Position Trading", "Arbitrage", "Algorithmic Trading". Use a link to a relevant wiki page if one exists (e.g., `Trend Following`).
  • `asset_class`: (Optional) The asset class the strategy is best suited for. Examples include "Forex", "Stocks", "Cryptocurrencies", "Commodities", "Options", "Futures". Use a link where appropriate (e.g., `Forex`).
  • `timeframe`: (Optional) The recommended timeframe for using the strategy (e.g., "5-minute", "15-minute", "Daily", "Weekly").
  • `indicators`: (Optional) A comma-separated list of technical indicators used in the strategy. Link to relevant indicator pages where available (e.g., "Moving Average", "RSI", "MACD", "Bollinger Bands").
  • `risk_level`: (Optional) The level of risk associated with the strategy. Options include "Low", "Moderate", "High", "Very High".
  • `profit_potential`: (Optional) The potential profit level of the strategy. Options include "Low", "Moderate", "High", "Very High".
  • `complexity`: (Optional) The complexity of the strategy. Options include "Simple", "Intermediate", "Complex".
  • `entry_rules`: (Optional) A brief description of the rules for entering a trade. Be concise.
  • `exit_rules`: (Optional) A brief description of the rules for exiting a trade. Be concise.
  • `stop_loss`: (Optional) How stop-loss levels are determined (e.g., "Percentage based", "Support/Resistance", "ATR").
  • `take_profit`: (Optional) How take-profit levels are determined (e.g., "Risk/Reward Ratio", "Resistance Level", "Fibonacci Extension").
  • `backtesting_results`: (Optional) A summary of backtesting results, including win rate, average profit per trade, and maximum drawdown. Be specific and provide dates for the backtest.
  • `notes`: (Optional) Any additional notes or considerations regarding the strategy.
  • `see_also`: (Optional) A comma-separated list of related strategies or concepts. Link to relevant wiki pages.

Example

Here's an example of how the template might be used to document a "Moving Average Crossover" strategy:

```wiki Template:Infobox Trading Strategy

Overview

The Moving Average Crossover is a widely used trend-following strategy... (rest of the article content) ```

Advanced Usage & Considerations

  • **Consistent Formatting:** Maintain consistency in the information provided for each strategy. This makes it easier to compare strategies and identify potential opportunities.
  • **Accuracy:** Ensure the information provided is accurate and up-to-date. Backtesting results should be clearly documented and the methodology explained.
  • **Objectivity:** Present the strategy objectively, highlighting both its strengths and weaknesses. Avoid making overly optimistic claims.
  • **Linking:** Utilize internal links extensively to connect related concepts and strategies. This enhances the wiki's navigability and promotes a deeper understanding of the subject matter. Link to relevant pages such as Candlestick Patterns, Chart Patterns, Support and Resistance, Trend Lines, Fibonacci Retracement, Elliott Wave Theory, Ichimoku Cloud, Parabolic SAR, ATR, Stochastic Oscillator, Williams %R, Donchian Channels, Keltner Channels, VWAP, Ichimoku Cloud, Heikin Ashi, Renko Charts, Point and Figure Charts, Market Sentiment, Risk Management, Position Sizing, Correlation, Volatility, Time Series Analysis, Monte Carlo Simulation, Algorithmic Trading.
  • **Image Quality:** Use high-quality images that are clear and easy to understand. Ensure the images are properly labeled and captioned.
  • **Regular Updates:** Trading strategies can evolve over time. Regularly review and update the information in the infobox to reflect any changes.
  • **Backtesting Details:** When providing backtesting results, include details such as the backtesting period, the asset tested, the commission costs, and the slippage assumptions.
  • **Risk Disclosure:** Always include a disclaimer stating that trading involves risk and that past performance is not indicative of future results.
  • **Parameter Descriptions:** When describing parameters like `stop_loss` and `take_profit`, be specific about how those levels are calculated. For example, instead of simply saying "Percentage based," specify "2% below entry price."
  • **Alternative Strategies:** In the `see_also` section, consider linking to alternative strategies that address the same market conditions or trading goals.
  • **Nested Templates:** While not directly part of this template, consider using nested templates for complex indicators or concepts to avoid cluttering the infobox.

Troubleshooting

  • **Infobox Not Rendering:** If the infobox is not rendering correctly, double-check the syntax of the template tags and parameters. Ensure that all required parameters are present and that there are no typos.
  • **Image Not Displaying:** If the image is not displaying, verify that the image file exists and that the URL is correct. Also, check the image permissions to ensure that it is publicly accessible.
  • **Incorrect Formatting:** If the formatting is incorrect, review the MediaWiki syntax for the template and ensure that it is being used correctly. Pay attention to whitespace and special characters.
  • **Parameter Conflicts:** If you encounter parameter conflicts, ensure that you are not using the same parameter name multiple times.

Future Enhancements

  • **Automated Backtesting Integration:** Integrate the template with automated backtesting tools to automatically populate the `backtesting_results` parameter.
  • **Performance Visualization:** Add a feature to dynamically generate charts and graphs based on the backtesting results.
  • **Strategy Comparison Tool:** Develop a tool that allows users to compare multiple strategies side-by-side based on the information in the infoboxes.
  • **User-Contributed Data:** Allow users to contribute data and feedback on strategies, subject to moderation.
  • **Dynamic Risk Assessment:** Implement a dynamic risk assessment feature that calculates the risk level of a strategy based on its parameters and market conditions.
  • **Integration with Real-Time Data Feeds:** Connect the template to real-time data feeds to provide live performance updates.
  • **Multilingual Support:** Translate the template into multiple languages to make it accessible to a wider audience.
  • **Improved Search Functionality:** Enhance the wiki's search functionality to allow users to easily find strategies based on specific criteria.

This `Template:Infobox Trading Strategy` is a vital tool for building a comprehensive and user-friendly wiki dedicated to trading and technical analysis. By adhering to the guidelines outlined in this article, contributors can ensure that the information presented is consistent, accurate, and informative, ultimately benefiting all users of the wiki. The careful application of this template, combined with diligent research and clear writing, will significantly enhance the quality and value of the wiki's content.

Technical Analysis Trading Psychology Fundamental Analysis Chart Patterns Risk Management

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  1. Template:Currentdate

Template:Currentdate is a fundamental and highly useful template within the MediaWiki environment, designed to dynamically insert the current date into a wiki page. While seemingly simple, its applications are broad, spanning from automatically updating information on pages (like "Last updated" notices) to creating time-sensitive content and automating data logging. This article provides a comprehensive guide to understanding, using, and customizing the `Currentdate` template, geared towards beginner MediaWiki users.

Purpose and Functionality

The core function of `Template:Currentdate` is to display the current date in a user-defined format. Unlike simply typing the date manually, which quickly becomes outdated, the template automatically updates whenever the page is viewed (or re-cached by the server). This is achieved using MediaWiki's parser functions, specifically the `{{#time:format}}` parser function. The template essentially acts as a wrapper around this function, providing a simplified and reusable method for date formatting.

This dynamic nature makes it incredibly valuable for:

  • **Maintenance Notices:** Indicating when a page was last reviewed or updated. This is crucial for maintaining information accuracy, especially on frequently changing topics like Technical Analysis.
  • **Event Tracking:** Displaying the current date alongside event logs or activity reports.
  • **Time-Sensitive Information:** Highlighting expiry dates for promotions, deadlines for submissions, or the current status of time-limited data. Consider its use alongside Candlestick Patterns for analyzing price action over specific timeframes.
  • **Automated Reports:** Generating reports that reflect the current date without manual intervention. For example, tracking the Moving Average Convergence Divergence (MACD) crossover date.
  • **Page Categorization:** Using the date as part of a page category to facilitate chronological organization.

Basic Usage

The simplest way to use `Template:Currentdate` is to insert it into a page with the following wikitext:

```wiki Template loop detected: Template:Currentdate ```

This will display the current date in the default format, which is typically `YYYY-MM-DD` (e.g., 2023-10-27). However, the real power of the template lies in its ability to format the date according to your specific needs.

Formatting Options

The `{{#time:format}}` parser function offers a wide range of formatting options. These are specified as arguments to the `Currentdate` template. Here's a breakdown of the most common format codes:

  • `Y`: Four-digit year (e.g., 2023)
  • `y`: Two-digit year (e.g., 23)
  • `m`: Month as a number (01-12)
  • `n`: Month as a number without leading zeros (1-12)
  • `M`: Month as a short name (Jan, Feb, Mar…)
  • `F`: Month as a full name (January, February, March…)
  • `d`: Day of the month (01-31)
  • `j`: Day of the month without leading zeros (1-31)
  • `D`: Day of the week as a short name (Mon, Tue, Wed…)
  • `l`: Day of the week as a full name (Monday, Tuesday, Wednesday…)
  • `H`: Hour in 24-hour format (00-23)
  • `h`: Hour in 12-hour format (01-12)
  • `i`: Minutes (00-59)
  • `s`: Seconds (00-59)
  • `a`: am or pm

You can combine these format codes to create custom date and time formats. For example:

Advanced Usage and Customization

1. **Timezones:** By default, `{{#time}}` uses the server's timezone. To specify a different timezone, you can use the `tz` parameter. Timezone names must be valid IANA timezone identifiers (e.g., `America/New_York`, `Europe/London`, `Asia/Tokyo`).

   ```wiki
   Template loop detected: Template:Currentdate
   ```
   This will display the date in the America/New_York timezone.  This is particularly important when dealing with Forex Trading and global markets.

2. **Using Variables:** You can combine `Currentdate` with variables defined elsewhere on the page to create even more dynamic content. However, MediaWiki's variable handling can be complex; ensure your variables are properly defined and accessible.

3. **Conditional Formatting:** While not directly built into the template, you can use parser functions like `{{#if}}` or `{{#switch}}` to conditionally format the date based on certain criteria. For example, you could display a different message if the date falls within a specific range, relating to a Fibonacci Retracement level.

4. **Caching Considerations:** MediaWiki caches pages to improve performance. This means that the `Currentdate` template won't update *instantly* when the date changes. The cache expiration time depends on your wiki's configuration. If you need near-real-time updates, you might need to bypass the cache (which can impact performance) or consider alternative solutions.

5. **Combining with other Templates:** The `Currentdate` template works seamlessly with other templates. You can pass the formatted date as a parameter to another template to create more complex functionality. For example, you could have a template that displays a timer counting down to a specific date, using `Currentdate` to get the current date and calculating the remaining time. This is useful for tracking Elliott Wave cycles.

Error Handling and Troubleshooting

  • **Invalid Format Codes:** If you use an invalid format code, the template will likely display an error message or an unexpected result. Double-check the format codes against the documentation.
  • **Invalid Timezone:** If you specify an invalid timezone identifier, the template may display the server's default timezone or an error message. Ensure the timezone name is correct and valid. Consult a list of IANA timezone identifiers online.
  • **Caching Issues:** If the date isn't updating as expected, try purging the page cache (usually by editing the page and saving it, or by using the "Purge" option if available).
  • **Template Protection:** If the `Currentdate` template is protected (meaning only administrators can edit it), you won't be able to modify its code directly. In this case, you'll need to rely on the existing functionality and formatting options.
  • **Parser Function Limits:** MediaWiki has limits on the complexity of parser functions. If you're using `Currentdate` in a very complex expression, you might encounter errors. Simplify the expression or consider alternative solutions.

Comparison with Alternatives

While `Template:Currentdate` is the most common method for displaying the current date, there are a few alternatives:

  • **Using `{{#time}}` directly:** You can use the `{{#time:format}}` parser function directly in your page content without using the `Currentdate` template. However, this can make your code less readable and reusable.
  • **Lua Modules:** For more complex date and time manipulation, you can use Lua modules. Lua is a scripting language that's integrated with MediaWiki, and it offers more powerful features than parser functions. However, Lua requires more technical expertise.
  • **Extensions:** There are several MediaWiki extensions that provide advanced date and time functionality. These extensions can offer features like date pickers, calendars, and more sophisticated formatting options.

For most basic use cases, `Template:Currentdate` provides the best balance of simplicity, reusability, and functionality. Consider Lua or extensions only if you have very specific requirements that can't be met by the template. Understanding these alternatives is important when analyzing Market Breadth indicators, which often rely on precise date calculations.

Best Practices

  • **Consistency:** Use a consistent date format throughout your wiki to improve readability and maintain a professional appearance.
  • **Timezone Awareness:** Always be aware of the timezone when displaying dates, especially if your wiki serves a global audience. Explicitly specify the timezone whenever possible.
  • **Clear Documentation:** Document the purpose and usage of the `Currentdate` template on your wiki's help pages.
  • **Avoid Overuse:** Don't overuse the template. Only use it when dynamic date display is truly necessary.
  • **Test Thoroughly:** Test the template with different format codes and timezones to ensure it's working as expected.

Related Templates and Concepts

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Variables

Variables allow you to store and reuse values within a wiki page. They are defined using the `

  1. Template:Var – A Beginner's Guide

Template:Var is a fundamental, yet often overlooked, tool in the MediaWiki ecosystem. It provides a mechanism for defining and reusing variables within templates, drastically improving code readability, maintainability, and flexibility. This article aims to provide a comprehensive guide to `Template:Var`, geared towards beginners, covering its basic usage, advanced techniques, common pitfalls, and best practices. Understanding `Template:Var` is crucial for anyone looking to create complex and reusable templates on a MediaWiki platform. We will also explore how it relates to other template features and its potential applications.

What is Template:Var?

At its core, `Template:Var` allows you to define named parameters within a template that can be accessed and reused multiple times within the template's code. Without `Template:Var`, you would need to repeat the same value or expression throughout your template whenever you needed it, leading to verbose and error-prone code. `Template:Var` promotes the "DRY" (Don't Repeat Yourself) principle, making templates easier to understand, modify, and debug.

Imagine you're creating a template to display a stock chart. You might need the stock ticker symbol, the chart time frame (e.g., daily, weekly), and the chart type (e.g., candlestick, line) repeatedly throughout the template to generate different chart elements. Instead of typing these values multiple times, you can define them as variables using `Template:Var` and then reference those variables wherever needed.

Basic Usage

The syntax for defining a variable using `Template:Var` is as follows:

```wiki {{#var:variable_name | value}} ```

  • `#var`: This is the parser function that initiates the variable definition.
  • `variable_name`: This is the name you choose for your variable. It should be descriptive and follow MediaWiki's naming conventions (avoid spaces and special characters).
  • `value`: This is the value you want to assign to the variable. It can be a literal string, a number, another template call, or even a more complex expression.

To access the variable's value later in the template, you use the following syntax:

```wiki {{{variable_name}}} ```

Here’s a simple example:

```wiki {{#var:stock_ticker | AAPL}} Stock Ticker: {{{stock_ticker}}} ```

This would output:

``` Stock Ticker: AAPL ```

Example: A Simple Stock Information Template

Let’s create a more practical example. Suppose we want to create a template that displays basic information about a stock.

```wiki

{{#var:stock_name | Default Stock Name}} {{#var:stock_ticker | Default Ticker}} {{#var:current_price | 0.00}}

Stock Name: {{{stock_name}}} Stock Ticker: {{{stock_ticker}}} Current Price: {{{current_price}}}

Technical Analysis Notes:

Trading Strategies:

```

Now, we can use this template like this:

```wiki Template:StockInfo ```

This would output:

``` Stock Name: Apple Inc. Stock Ticker: AAPL Current Price: 170.34

Technical Analysis Notes:

Trading Strategies:

```

Notice how we've overridden the default values defined in the template with specific values when calling it. If we omit a parameter when calling the template, the default value will be used.

Advanced Techniques

  • **Default Values:** As seen in the example above, `Template:Var` automatically provides default values. This makes templates more robust and easier to use.
  • **Conditional Logic:** You can combine `Template:Var` with parser functions like `{{#if}}` or `{{#switch}}` to create conditional logic within your templates.
   ```wiki
   {{#var:show_analysis | false}}
   {{#if:{{{show_analysis}}}
     | Detailed Analysis:
     |  (Analysis hidden)
   }}
   ```
  • **Template Calls within Variables:** You can assign the result of another template call to a variable. This allows you to build complex templates by composing smaller, reusable components.
   ```wiki
   {{#var:formatted_price | {{FormatPrice:{{{current_price}}}}} }}
   Formatted Price: {{{formatted_price}}}
   ```
  • **Looping with Template:Loop:** While more complex, `Template:Var` can be used in conjunction with `Template:Loop` to iterate over a list of items and generate dynamic content. This is particularly useful for creating tables or lists based on data stored in a variable. See also Help:Loop.
  • **Variable Scope:** Variables defined within a template are local to that template. They are not accessible from outside the template unless explicitly returned as part of the template's output.
  • **Using Variables in other Parser Functions:** `Template:Var` variables can seamlessly integrate with other parser functions such as `{{#time}}`, `{{#titlecase}}`, and `{{#formatnum}}`. This expands functionality significantly.
  • **Combining with Template:Args:** For more complex parameter handling, consider using `Template:Var` alongside `Template:Args`. `Template:Args` is useful for processing a variable number of arguments. See also Help:Args.

Common Pitfalls and How to Avoid Them

  • **Incorrect Variable Names:** Double-check that you're using the correct variable names when accessing them. Case sensitivity matters. Typos are a common source of errors.
  • **Missing Default Values:** If you don't provide a default value and the parameter is not specified when calling the template, the variable will be empty, which might lead to unexpected results. Always consider providing sensible defaults.
  • **Circular Dependencies:** Avoid creating circular dependencies between templates, where template A relies on template B, and template B relies on template A. This can lead to infinite loops and errors.
  • **Overuse of Variables:** While `Template:Var` is powerful, don't overuse it. For very simple templates with only a few parameters, it might be overkill. Strive for a balance between readability and conciseness.
  • **Security Concerns:** Be cautious when using user-supplied input directly in variables, especially if the input is used in other parser functions or template calls. Consider using sanitization techniques to prevent potential security vulnerabilities. This is particularly important if dealing with data from external sources.
  • **Conflicting Variable Names:** Ensure that variable names are unique within a template to avoid conflicts and unexpected behavior.

Best Practices

  • **Use Descriptive Variable Names:** Choose variable names that clearly indicate the purpose of the variable. This makes your templates easier to understand and maintain.
  • **Provide Meaningful Default Values:** Default values should be sensible and prevent errors when a parameter is not specified.
  • **Document Your Templates:** Clearly document the purpose of each variable and any special considerations. Use the `` tags to include documentation.
  • **Test Thoroughly:** Test your templates with various inputs to ensure they behave as expected.
  • **Keep Templates Modular:** Break down complex templates into smaller, reusable components to improve maintainability.
  • **Use Consistent Formatting:** Follow a consistent formatting style for your template code to improve readability.
  • **Consider Template Categories:** Place your templates into appropriate categories to make them easier to find and reuse.

Relationship to Other Template Features

`Template:Var` complements other MediaWiki template features such as:

  • **Parameters:** `Template:Var` is used to define and manage parameters passed to a template.
  • **Parser Functions:** `Template:Var` can be used in conjunction with parser functions to perform calculations, manipulate strings, and add conditional logic.
  • **Template Includes:** You can use `Template:Var` to pass variables to included templates.
  • **Modules:** For more complex logic, consider using Module:Sandbox to create reusable functions that can be called from templates, using variables passed via `Template:Var`.
  • **TemplateData:** Allows for structured documentation of template parameters, aiding editors in using the template correctly.

Advanced Considerations for Financial Data Templates

When building templates dealing with financial data (like the stock information template example), consider the following:

  • **Data Sources:** Where is the data coming from? Consider using reliable APIs for real-time data.
  • **Data Formatting:** Use `{{#formatnum}}` to format numbers with appropriate separators and decimal places.
  • **Currency Symbols:** Handle currency symbols correctly using appropriate formatting.
  • **Volatility Indicators:** Integrate indicators like Bollinger Bands or Average True Range to assess volatility.
  • **Trend Identification:** Implement tools for identifying trends, such as MACD or Ichimoku Cloud.
  • **Chart Integration:** Explore ways to integrate chart libraries into your templates (this may require extensions or JavaScript).
  • **Risk Management:** Include disclaimers and warnings about the risks of trading.
  • **Market Sentiment Analysis:** Consider incorporating sentiment indicators based on news and social media data.
  • **Economic Calendars:** Provide links to economic calendars to help users stay informed about important events.
  • **Correlation Analysis:** Explore the correlation between different assets.
  • **Options Pricing Models:** For options trading templates, consider incorporating options pricing models like Black-Scholes.
  • **Candlestick Pattern Recognition:** Implement logic to identify common candlestick patterns like Doji, Hammer, and Engulfing Patterns.
  • **Volume Analysis:** Analyze trading volume to confirm trends and identify potential reversals.
  • **Support and Resistance Levels:** Dynamically identify support and resistance levels based on price action.
  • **Elliott Wave Theory:** (Advanced) Consider incorporating elements of Elliott Wave Theory.
  • **Gann Analysis:** (Advanced) Explore Gann analysis techniques.
  • **Fundamental Analysis:** Link to resources for fundamental analysis of companies.
  • **News Integration:** Display relevant news headlines related to the stock.
  • **Earnings Reports:** Provide links to earnings reports and financial statements.
  • **Analyst Ratings:** Display analyst ratings and price targets.
  • **Short Interest Ratio:** Show the short interest ratio.



Help:Templates Help:Variables Help:ParserFunctions Help:Args Help:Loop Module:Sandbox Template:Documentation Help:Categories Moving Averages Relative Strength Index Fibonacci Retracements Day Trading Swing Trading Scalping Black-Scholes Bollinger Bands Average True Range MACD Ichimoku Cloud Doji Hammer Engulfing Patterns

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  1. Template:Var – A Beginner's Guide

Template:Var is a fundamental, yet often overlooked, tool in the MediaWiki ecosystem. It provides a mechanism for defining and reusing variables within templates, drastically improving code readability, maintainability, and flexibility. This article aims to provide a comprehensive guide to `Template:Var`, geared towards beginners, covering its basic usage, advanced techniques, common pitfalls, and best practices. Understanding `Template:Var` is crucial for anyone looking to create complex and reusable templates on a MediaWiki platform. We will also explore how it relates to other template features and its potential applications.

What is Template:Var?

At its core, `Template:Var` allows you to define named parameters within a template that can be accessed and reused multiple times within the template's code. Without `Template:Var`, you would need to repeat the same value or expression throughout your template whenever you needed it, leading to verbose and error-prone code. `Template:Var` promotes the "DRY" (Don't Repeat Yourself) principle, making templates easier to understand, modify, and debug.

Imagine you're creating a template to display a stock chart. You might need the stock ticker symbol, the chart time frame (e.g., daily, weekly), and the chart type (e.g., candlestick, line) repeatedly throughout the template to generate different chart elements. Instead of typing these values multiple times, you can define them as variables using `Template:Var` and then reference those variables wherever needed.

Basic Usage

The syntax for defining a variable using `Template:Var` is as follows:

```wiki {{#var:variable_name | value}} ```

  • `#var`: This is the parser function that initiates the variable definition.
  • `variable_name`: This is the name you choose for your variable. It should be descriptive and follow MediaWiki's naming conventions (avoid spaces and special characters).
  • `value`: This is the value you want to assign to the variable. It can be a literal string, a number, another template call, or even a more complex expression.

To access the variable's value later in the template, you use the following syntax:

```wiki {{{variable_name}}} ```

Here’s a simple example:

```wiki {{#var:stock_ticker | AAPL}} Stock Ticker: {{{stock_ticker}}} ```

This would output:

``` Stock Ticker: AAPL ```

Example: A Simple Stock Information Template

Let’s create a more practical example. Suppose we want to create a template that displays basic information about a stock.

```wiki

{{#var:stock_name | Default Stock Name}} {{#var:stock_ticker | Default Ticker}} {{#var:current_price | 0.00}}

Stock Name: {{{stock_name}}} Stock Ticker: {{{stock_ticker}}} Current Price: {{{current_price}}}

Technical Analysis Notes:

Trading Strategies:

```

Now, we can use this template like this:

```wiki Template:StockInfo ```

This would output:

``` Stock Name: Apple Inc. Stock Ticker: AAPL Current Price: 170.34

Technical Analysis Notes:

Trading Strategies:

```

Notice how we've overridden the default values defined in the template with specific values when calling it. If we omit a parameter when calling the template, the default value will be used.

Advanced Techniques

  • **Default Values:** As seen in the example above, `Template:Var` automatically provides default values. This makes templates more robust and easier to use.
  • **Conditional Logic:** You can combine `Template:Var` with parser functions like `{{#if}}` or `{{#switch}}` to create conditional logic within your templates.
   ```wiki
   {{#var:show_analysis | false}}
   {{#if:{{{show_analysis}}}
     | Detailed Analysis:
     |  (Analysis hidden)
   }}
   ```
  • **Template Calls within Variables:** You can assign the result of another template call to a variable. This allows you to build complex templates by composing smaller, reusable components.
   ```wiki
   {{#var:formatted_price | {{FormatPrice:{{{current_price}}}}} }}
   Formatted Price: {{{formatted_price}}}
   ```
  • **Looping with Template:Loop:** While more complex, `Template:Var` can be used in conjunction with `Template:Loop` to iterate over a list of items and generate dynamic content. This is particularly useful for creating tables or lists based on data stored in a variable. See also Help:Loop.
  • **Variable Scope:** Variables defined within a template are local to that template. They are not accessible from outside the template unless explicitly returned as part of the template's output.
  • **Using Variables in other Parser Functions:** `Template:Var` variables can seamlessly integrate with other parser functions such as `{{#time}}`, `{{#titlecase}}`, and `{{#formatnum}}`. This expands functionality significantly.
  • **Combining with Template:Args:** For more complex parameter handling, consider using `Template:Var` alongside `Template:Args`. `Template:Args` is useful for processing a variable number of arguments. See also Help:Args.

Common Pitfalls and How to Avoid Them

  • **Incorrect Variable Names:** Double-check that you're using the correct variable names when accessing them. Case sensitivity matters. Typos are a common source of errors.
  • **Missing Default Values:** If you don't provide a default value and the parameter is not specified when calling the template, the variable will be empty, which might lead to unexpected results. Always consider providing sensible defaults.
  • **Circular Dependencies:** Avoid creating circular dependencies between templates, where template A relies on template B, and template B relies on template A. This can lead to infinite loops and errors.
  • **Overuse of Variables:** While `Template:Var` is powerful, don't overuse it. For very simple templates with only a few parameters, it might be overkill. Strive for a balance between readability and conciseness.
  • **Security Concerns:** Be cautious when using user-supplied input directly in variables, especially if the input is used in other parser functions or template calls. Consider using sanitization techniques to prevent potential security vulnerabilities. This is particularly important if dealing with data from external sources.
  • **Conflicting Variable Names:** Ensure that variable names are unique within a template to avoid conflicts and unexpected behavior.

Best Practices

  • **Use Descriptive Variable Names:** Choose variable names that clearly indicate the purpose of the variable. This makes your templates easier to understand and maintain.
  • **Provide Meaningful Default Values:** Default values should be sensible and prevent errors when a parameter is not specified.
  • **Document Your Templates:** Clearly document the purpose of each variable and any special considerations. Use the `` tags to include documentation.
  • **Test Thoroughly:** Test your templates with various inputs to ensure they behave as expected.
  • **Keep Templates Modular:** Break down complex templates into smaller, reusable components to improve maintainability.
  • **Use Consistent Formatting:** Follow a consistent formatting style for your template code to improve readability.
  • **Consider Template Categories:** Place your templates into appropriate categories to make them easier to find and reuse.

Relationship to Other Template Features

`Template:Var` complements other MediaWiki template features such as:

  • **Parameters:** `Template:Var` is used to define and manage parameters passed to a template.
  • **Parser Functions:** `Template:Var` can be used in conjunction with parser functions to perform calculations, manipulate strings, and add conditional logic.
  • **Template Includes:** You can use `Template:Var` to pass variables to included templates.
  • **Modules:** For more complex logic, consider using Module:Sandbox to create reusable functions that can be called from templates, using variables passed via `Template:Var`.
  • **TemplateData:** Allows for structured documentation of template parameters, aiding editors in using the template correctly.

Advanced Considerations for Financial Data Templates

When building templates dealing with financial data (like the stock information template example), consider the following:

  • **Data Sources:** Where is the data coming from? Consider using reliable APIs for real-time data.
  • **Data Formatting:** Use `{{#formatnum}}` to format numbers with appropriate separators and decimal places.
  • **Currency Symbols:** Handle currency symbols correctly using appropriate formatting.
  • **Volatility Indicators:** Integrate indicators like Bollinger Bands or Average True Range to assess volatility.
  • **Trend Identification:** Implement tools for identifying trends, such as MACD or Ichimoku Cloud.
  • **Chart Integration:** Explore ways to integrate chart libraries into your templates (this may require extensions or JavaScript).
  • **Risk Management:** Include disclaimers and warnings about the risks of trading.
  • **Market Sentiment Analysis:** Consider incorporating sentiment indicators based on news and social media data.
  • **Economic Calendars:** Provide links to economic calendars to help users stay informed about important events.
  • **Correlation Analysis:** Explore the correlation between different assets.
  • **Options Pricing Models:** For options trading templates, consider incorporating options pricing models like Black-Scholes.
  • **Candlestick Pattern Recognition:** Implement logic to identify common candlestick patterns like Doji, Hammer, and Engulfing Patterns.
  • **Volume Analysis:** Analyze trading volume to confirm trends and identify potential reversals.
  • **Support and Resistance Levels:** Dynamically identify support and resistance levels based on price action.
  • **Elliott Wave Theory:** (Advanced) Consider incorporating elements of Elliott Wave Theory.
  • **Gann Analysis:** (Advanced) Explore Gann analysis techniques.
  • **Fundamental Analysis:** Link to resources for fundamental analysis of companies.
  • **News Integration:** Display relevant news headlines related to the stock.
  • **Earnings Reports:** Provide links to earnings reports and financial statements.
  • **Analyst Ratings:** Display analyst ratings and price targets.
  • **Short Interest Ratio:** Show the short interest ratio.



Help:Templates Help:Variables Help:ParserFunctions Help:Args Help:Loop Module:Sandbox Template:Documentation Help:Categories Moving Averages Relative Strength Index Fibonacci Retracements Day Trading Swing Trading Scalping Black-Scholes Bollinger Bands Average True Range MACD Ichimoku Cloud Doji Hammer Engulfing Patterns

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Character Entities

Certain characters have special meanings in Wiki syntax. To display them literally, use character entities:

  • `<` for <
  • `>` for >
  • `&` for &
  • `'` for '
  • `"` for "

Advanced Features

Categories

Categories are used to organize pages. Add a category link at the bottom of the page using the `` syntax. For example, ``. This page will be categorized under "Help".

Comments

Comments are used to add notes to the wikitext that are not displayed on the rendered page. Use `` to create a comment.

Nowiki

The `` tag prevents the interpretation of Wiki syntax within the tag. ```wiki <nowiki>This is text that will not be formatted. ```

renders as:

This is text that will not be formatted.

Math

MediaWiki supports mathematical formulas using LaTeX syntax. Enclose the formula within `$` (for inline math) or `$$` (for displayed math).

  • `$E=mc^2$` renders as $E=mc^2$
  • `$$ \int_0^\infty e^{-x^2} dx = \frac{\sqrt{\pi}}{2} $$` renders as:

$$ \int_0^\infty e^{-x^2} dx = \frac{\sqrt{\pi}}{2} $$

Trading & Market Analysis Resources

Here are some links to resources related to trading and market analysis, which can be useful when documenting trading strategies or technical analysis techniques on a wiki:

This is a starting point, and many other resources are available online. Remember to always verify information from multiple sources.


Resources for Learning More

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