I know about camel case rules, but I'm confused with this m rule. What does it stand for? I'm a PHP developer. "We" use first letters of variables as indication of type, like 'b' for boolean, 'i' for integer and so on.
Is 'm' a Java thing? Does it stand for mobile? mixed?
This notation comes from AOSP (Android Open Source Project) Code Style Guidelines for Contributors:
Follow Field Naming Conventions
- Non-public, non-static field names start with m.
- Static field names start with s.
- Other fields start with a lower case letter.
- Public static final fields (constants) are ALL_CAPS_WITH_UNDERSCORES.
Note that the linked style guide is for code to be contributed to the Android Open Source Project.
It is not a style guide for the code of individual Android apps.