Arrays class
Info
The Arrays class is a Library for MetaTrader 5 that sometimes we need to add an element to array, or insert an element. Standard Mql Array functions are efficient but do not provide such functionality.
Usage
This tool is typically used for enhancing chart analysis and decision making.
Platform
This Library works exclusively on MetaTrader 5 (both build 600+ and newer versions).
Setup
Place the downloaded file in MQL5/Libraries folder via File ? Open Data Folder in MetaTrader 5.
How to Install and Use Arrays class
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
Sometimes we need to add an element to array, or insert an element.
Typical Use Case
This Library excels in automated trading and technical analysis on MetaTrader 5.
Compatible Platform & Setup
This Library works on MetaTrader 5. Place the file in the MQL5/Libraries folder and restart the terminal.
Description & Settings
Related: Simplified Order Management Class for MT4/MT5 - another powerful library for MetaTrader 5 traders.
Sometimes we need to add an element to array, or insert an element.
Also recommended: Class Calc Frac - Custom Bar Count for Fractal Detection - similar library with strong performance on MetaTrader 5.
Standard Mql Array functions are efficient but do not provide such functionality.For example, if you need to find an element, you can search only in sorted array with ArrayBsearch.
They also do not support complex data types.
This class fills the gap, and provides some frequent array operation methods:
Add/insert elements to array by value/reference.
Find/ReverseFind an element in unsorted array.
Sum/Average of a numeric array.
Min/Max returns the actual min/max value, not index of the value.
Array copy/insert works with arrays containing complex types.
StringToCodes creates an array of symbol codes from a string.
Notes:
FindReverse searches for the element from array end.
Addbyref does the same thing as Add by can work with complex types, which are sent only by reference.
Copy has the same signature/behavior as the standard Mql ArrayCopy. Unlike ArrayCopy, it allows complex types in src/dst.
StringToCodes is basically the standard StringToShortArray, except that the final 0 is removed from the destination array.
Examples of Arrays class usage.
Output:
You may also like: CGV Class for Global Variables - excellent alternative for library users on MetaTrader 5.
⚠ 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.