What is M in Android variable?

The ‘m’ stands for ‘member’ and tells you that a variable isn’t a local variable or a method parameter but a class member. Another often used naming convention is to start member names with ‘_’. This naming convention isn’t limited to Android development, nor Java development.

Why the programmer must give the variable a name?

The name is Symbolic. It represents the “title” of the information that is being stored with the variable. The name is perhaps the most important property to the programmer, because this is how we “access” the variable. The type represents what “kind” of data is stored with the variable.

What makes a good or bad variable name?

A variable name should tell you concisely in words what the variable stands for. Your code will be read more times than it is written. Prioritize how easy your code is to read over than how quick it is to write.

Why do Android variables start with M?

The m is here to indicate a member variable. It has 2 huge advantages: If you see it, you instantly recognize it as a member variable. Press m and you get all members via the auto completer.

What does M mean in variables?

member variable
m is to indicate that it is a member variable, it is common variant on Hungarian Notation. Other common prefixes to look out for are I for interface and C for class. Depending on the language, it is also common to prefix s for string and b to indicate a boolean.

Why is good naming of variables methods etc important in professional software engineering?

Purpose of variable should be clear. It’s better choosing names that reveal the intent, which can make it much easier to understand and change code.

Why should a variable not be declared as a model variable?

Why should a variable not be declared as a module variable? a.) It prevents a procedure from being self contained. Local variable names can be reused in other procedures.

How long is too long for variable names?

Descriptive Variable Names Only Go So Far Descriptive variable names really make reading code a lot easier. But the reality is that some variables are hard to describe accurately. In general, you want to be descriptive, but keep your variable names from about 8 to 20 characters.

Can variable name start with?

Variable names can be arbitrarily long. They can contain both letters and digits, but they have to begin with a letter or an underscore.

Why do variable names start with M?