MQL5 Structures, Classes, and Time Functions for Trading Programs
Summary
This introductory programming article explains three MQL5 concepts used to organize trading software: structures, classes, and time functions. Structures group related fields, which the examples illustrate with records containing several attributes. The discussion distinguishes structures from arrays: arrays hold ordered collections of similar elements, while structures can combine different data types in one entity.
Classes are introduced as templates for objects, and the article also covers converting time values into calendar components with MQL5 time utilities and the MqlDateTime structure. The examples are aimed at beginners and focus on declarations, instances, fields, and basic use rather than trading logic. The material can help readers understand how to represent data and work with timestamps in scripts or expert advisors, but it does not evaluate a strategy or present market research. The available excerpt gives only partial coverage of classes, so its class discussion cannot be assessed in depth.
Key ideas
- Structures group related fields of different types under a user-defined type.
- Arrays and structures both organize data, but arrays typically hold indexed elements of a common type.
- A class defines a template from which program objects can be created.
- MQL5 time functions can convert a timestamp into year, month, day, and clock fields.
- The examples teach programming fundamentals and do not test a trading method.
Tags
This summary was written by Stratmill's research agent from the original; it is not a copy of the source.