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Hash Map implementation
Info
The Hash Map implementation is a Library for MetaTrader 4 that description: this is a hashmap implementation. This allows something like arrays but with string indexes.
Usage
This tool is typically used for enhancing chart analysis and decision making.
Platform
This Library works exclusively on MetaTrader 4 (both build 600+ and newer versions).
Setup
Place the downloaded file in MQL4/Libraries folder via File ? Open Data Folder in MetaTrader 4.
How to Install and Use Hash Map implementation
1. Storage: Place library files in the MQL/Libraries directory to ensure they are accessible to your projects.
2. Implementation: Include the library in your code using the #import directive, ensuring you match the exact function names and parameters.
3. Compilation: Ensure the library is present in the directory before you compile your main EA or script, as the compiler links them during this phase.
4. Management: Keep libraries organized in sub-folders if you manage many custom functions to maintain a clean project structure.
Frequently Asked Questions
Q: What is a library file used for? A: Libraries store reusable code modules, allowing you to centralize common logic used by multiple EAs or indicators.
Q: Is a library executable? A: No, libraries are non-executable files containing functions; they must be imported into an EA, indicator, or script to function.
Q: Can I update a library while the platform is running? A: You should compile your EA or script after updating a library to ensure the latest code changes are integrated.
What this tool does
Description: This is a HashMap implementation.
Typical Use Case
This Library excels in automated trading and technical analysis on MetaTrader 4.
Compatible Platform & Setup
This Library works on MetaTrader 4. Place the file in the MQL4/Libraries folder and restart the terminal.
Description & Settings
Related: RA D - Rapid Application Development library - another powerful library for MetaTrader 4 traders.
Description:This is a HashMap implementation. This allows something like arrays but with string indexes. It maps strings to Objects. The Objects must be a subclass of the HashValue class provided.
Also recommended: Time In Range time checking function - similar library with strong performance on MetaTrader 4.
The Hash by default will 'adopt' the value objects. In which case it will free the memory when they are no longer in the hash. This can be disabled in the constructor.Documentation: 125
Below is an example, and it is also used in my class, to represent JSON Objects.
You may also like: Trade Classes from MT5 for MT4 - excellent alternative for library users on MetaTrader 4.
⚠ Limitations & Risk Warning
- This tool is provided for educational and testing purposes only.
- Past performance does not guarantee future results.
- Trading involves substantial risk of loss. Use on a demo account first.
- Results may vary depending on market conditions, broker, and settings.
- We recommend thorough backtesting and forward testing before using with real funds.