for example,sometimes I see function like this:
public void changeColor(Color aColor){
}
what is the function or meaning of "a" in parameter "aColor"?
Asked
Active
Viewed 956 times
-1
-
It looks like it means "a color" as in "a color to change to" – kirbyquerby May 27 '15 at 01:17
-
1None, it's just part of the name of the variable. – user1803551 May 27 '15 at 01:18
-
It seems like a naming convention, not anything functional. – almightyGOSU May 27 '15 at 01:21
-
It's a means by which you can use the variable within your code, if it doesn't have a name, then how can you address it, "Hay, you, color, yeah, you over there!"? – MadProgrammer May 27 '15 at 01:21
-
@MadProgrammer I think the question is about the "a" in "aColor", not about "aColor" itself. – user1803551 May 27 '15 at 01:23
-
@user1803551 It's still just a means to address a variable :P – MadProgrammer May 27 '15 at 01:24
-
@MadProgrammer It's part of the means :P – user1803551 May 27 '15 at 01:26
-
It's the Hungarian notation and you should not use it. – Jeroen Vannevel May 27 '15 at 01:32
-
The programmer thinks it reads better, that's all. Most people would simply use `color`. – ZhongYu May 27 '15 at 01:33
-
`a` is one of two forms (along with `an`) of the [indefinite article](http://en.wikipedia.org/wiki/Indefinite_article). It is used to signify that the following noun is not a specific one and that its identity is irrelevant. – user1803551 May 27 '15 at 01:37
2 Answers
0
That is just what they named the variable. You may also see "m" in a lot of other people's code, especially if you look through the Java source code. Example mColor, mOnTouchListener, etc.
Chamatake-san
- 551
- 3
- 10
0
Functions take arguments. In Java these arguments must be declared as a type(in this case a "Color" object) and named. The name of the argument doesn't matter. Imagine it as creating a new Color variable as such.
Color aColor;
and setting the variables value to whatever Color object you pass the function when you call it.
Now you have a Color named aColor that has a value that you set. There is nothing special about the name aColor, its just a name.
lleontan
- 123
- 1
- 11