Exploring the intricacies of variables and functions, the article delves into how static variables help avoid unnecessary global variables, highlighting the role of functions as special types of variables that can return data types, unlike procedures. It explains the nuances of handling functions as constant variables across different programming languages—JavaScript, Python, C, C++, and MQL5. The text further clarifies the distinction and application of predefined variables in MQL5, which, while appearing as constants, can be modifiable under specific conditions using certain functions. This approach enhances code readability, maintainability, and security, crucial for developers working with algorithmic trading.
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