Log4mql
This professional-grade solution for MetaTrader 4 helps traders achieve greater efficiency in their daily workflow. This library provides a collection of modular, reusable code. It is utilized by developers to organize common functions, allowing for the integration of complex logic across multiple Expert Advisors, indicators, or scripts without the need for code duplication.
How to Setup and Use Log4mql
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.
Description & Settings
Log4mql is an MQL4 (MetaQuotes MetaTrader 4 Language) library for flexible logging to files and the terminal console. It is modeled after the Log4j Java library.
Documentation (GitHub):
Usage in your Code:
or (for more frequent usage)
Don't forget at the end of your EA/Indicator/Script:
or
Directories:
The directory for the log4mql.conf and the log4mql.log files
Normal mode: <mt4datadir>/MQL4/Files/
Test mode: <mt4datadir>/tester/files/
Log levels:
You can configure the required log level for output in the config file for each appending file and/or a global default.
TRACE
DEBUG
INFO
WARN
ERROR
CRIT
