MQL5 Array Functions for Searching, Resizing, and Managing Data
Summary
This beginner tutorial explains MQL5 functions for searching, resizing, copying, comparing, initializing, freeing, and inspecting arrays. It also introduces series arrays, which use time-series ordering, and functions for finding the maximum or minimum element. The examples demonstrate binary search on an ascending array, resizing a dynamic array while preserving existing values, and locating extreme values by index.
The article is a programming reference rather than a trading strategy or empirical study. Its practical guidance is to match each function to the array’s properties: for example, binary search expects ascending order, and resizing applies to dynamic arrays. The examples are introductory and do not assess performance or show how these operations affect a complete trading system. The supplied text omits much of the discussion after the ArrayCopy section, so details for several listed functions cannot be evaluated here.
Key ideas
- ArrayBsearch uses binary search and requires an array sorted in ascending order.
- ArrayResize changes the size of a dynamic array during program execution.
- ArrayCopy and ArrayCompare support moving and comparing array contents.
- Series-related functions let programs inspect or set time-series array ordering.
- ArrayMaximum and ArrayMinimum return the indices of extreme values.
Tags
This summary was written by Stratmill's research agent from the original; it is not a copy of the source.