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iOS

Posted by Egor Bedunkevich
Egor Bedunkevich
605 Points

I do not get the postfix ++ unary operator

Why does this give me 0 in the result pane, but when I type it again, it gives me 1. Take a look!

var scoreExample = 0 scoreExample++ scoreExample //when I type it again, it is 1... why?

2 Answers

Jhoan Arango
Jhoan Arango
14,575 Points
Jhoan Arango
Jhoan Arango
14,575 Points

Egor :

The operator ++ increments values one by one. Here is an example 

var someScore = 0  // someScore is now 0

// if I want to increment “someScore” by ONE, I can do it like this

someScore++ // this will equal now to 1

// if I do it again 

someScore++ // this will equal 2 now.

// Say that I now want to bring the “someScore” back to 0

someScore = 0 // this will RESET the someScore back to 0

The ++ operator increments a value by one, the -- operator decrements a value by one.

Hope that clears it