I saw lot of code (for example some Android source code) where fields name start with a m while static fields start with sExample (taken from Android View class source):private SparseArray<Object> mKeyedTags;private static int sNextAccessibilityViewId;I was wondering what m and s stand for... maybe is m mutable and s static?
Naming convention: field starting with m or s
programming practices;coding standards;naming
m is typically for a public member (see this answer for common C code conventions Why use prefixes on member variables in C++ classes).I've never seen s before, but based on that answer:m for members  c for constants/readonlys  p for pointer (and pp for pointer to pointer)  v for volatile  s for static  i for indexes and iterators  e for events  Have you read any published standards for the project you've seen that code in?One of the most famous prefix notation systems is Hungarian Notation.There is a excellent blog post by Joel Spolsky on prefixes: Making Wrong Code Look Wrong