Menu
I have seen some programmers using _ (underscore) in front of class names, and others using it for local variables.
Does the Java standard require/suggest the use of _ (underscore) in front of an private instance variable or class name?
601
A variable's name can be any legal identifier — an unlimited-length sequence of Unicode letters and digits, beginning with a letter, the dollar sign " $ ", or the underscore character " _ ". The convention, however, is to always begin your variable names with a letter, not " $ " or " _ ".
The use of the variable name _ in any context is never encouraged. The latest versions of Java reserve this name as a keyword and/or give it special semantics. If you use the underscore character (“_”) as an identifier, your source code can no longer be compiled. We will get a compile-time error.
Go variable naming rules: A variable name must start with a letter or an underscore character (_) A variable name cannot start with a digit. A variable name can only contain alpha-numeric characters and underscores ( a-z, A-Z , 0-9 , and _ )
A single leading underscore in front of a variable, a function, or a method name means that these objects are used internally.
I think artifacts like these are pre-IDE and C++ vintage. Don't do it.
162
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
