Using function return in if statement

Question

Hey,

Just wondering if using a function's return in an if statement for example is fine, or if it's something i should avoid doing and use a variable instead? I'm learning about function return values which is something i never bothered using.

 void Start()
 {
     if(RandomBool())
     {
         //Do something;
     }
 }
  
 bool RandomBool()
 {
     return Random.value > 0.5f ? true : false;
 }

Thanks

Answer 1

Best Answer

Answer by Harinezumi · Jan 17, 2018 at 03:48 PM

Of course it is correct, this is a typical use of a function. Basically you will have an "invisible" variable that is created for the return of the function. This saves you some lines and memory allocation for a local variable (although it might be optimized away by the compiler). It can also be easier to read, for example if you have a function IsVisible(), writing if (IsVisible())is very easy to understand.

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KhenaB · Jan 17, 2018 at 03:56 PM 0

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Thanks, that's exactly what i wanted to know, you should make your comment an answer so that i can choose it.

Harinezumi KhenaB · Jan 17, 2018 at 04:38 PM 0

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Here you go! I didn't know I could do that :D

Answer 2

Answer by ransomink · Jan 17, 2018 at 03:29 PM

Did you test and see if it works? There's nothing wrong with it. No reason to create a variable only to return it on the next line...

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KhenaB · Jan 17, 2018 at 03:52 PM 0

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Oh it does work, just making sure that it's a perfectly fine way to do things before i start using it a lot

Using function return in if statement

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