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RA D - Rapid Application Development library
Info
The RA D - Rapid Application Development library is a Library for MetaTrader 4 that this library includes numerous functions, which can speed up the development in the mql4 by saving from distracting on the mechanics and allowing to focus on the logic. For example, to open an order for 0.
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 RA D - Rapid Application Development library
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
This library includes numerous functions, which can speed up the development in the MQL4 by saving from distracting on the mechanics and allowing to focus on the logic.
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: Permutations and Combinations (MT4) - another powerful library for MetaTrader 4 traders.
This library includes numerous functions, which can speed up the development in the MQL4 by saving from distracting on the mechanics and allowing to focus on the logic. For example, to open an order for 0.4 lot, it is sufficient to call the
Also recommended: Time Suite - similar library with strong performance on MetaTrader 4.
OpenBuy(0.4);function. Naturally, such functions have more than one parameter, the other parameters are set to default. If necessary, they can be filled as well.
Here is an example of code for an abstract expert advisor:
Naturally, such an EA will not bring profits, because we all know this strategy based on MAs :)
This is only an example of the code. It shows that the library requires no value checks, no calculation of stop levels, there is no need to write 100-fold nested order checks, all this has been written for you in the library. Another code example that works with orders:
The code looks easy and at the same time it is functional and versatile.
Extended work with arrays. Now you will not have to repeatedly write the code for adding an element to array, now it is sufficient to call something like:
Deleting elements from array is also uncomplicated:
Or like this:
This is implemented using the function templates for the option of transferring by value and by link
If it is necessary to download the page from the Internet, simple call:
The same is with the file, only the second parameter is the filename.
The horrible expressions of MarketInfo(symbol, MODE_MAXLOT) are wrapped into normal functions => MarketInfoMaxLot(Symbol())
The mathematical apparatus has also been expanded. Searching for the maximum from multiple values no longer looks like a bunch of nested MathMax(MathMax(MathMax...))). It now features up to 5 arguments implemented using function templates, and can now be called as:
And generation of random numbers in the range of -34000 to 125000 looks the following way:
But then, the code is open. Look, add, suggest ideas on the structure of the library or its functionality, as well as general comments.
You may also like: The function of program operation by time - 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.