Is there a way to use ++ on Int in scala? [duplicate]

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++ operator in Scala

I want to increment an Int variable in scala. But, because Int is immutable, I have to do this

var myInt: Int = 5 .... myInt = myInt + 1

which seems a little too complicated. What I would like to do is

var myInt: Int = 5 .... myInt++

however, since Int is immutable, I can't do this. Is there any solution? Because I can't be first who would want to use ++ on integer variable...

TL;DR create a custom increment function: def inc(i:Int) = i+1 — dirkgently
– dirkgently, Commented Jun 16, 2012 at 22:37
try scala without var in most vases you won't need it anyway — AndreasScheinert
– AndreasScheinert, Commented Jun 17, 2012 at 20:20

0__ · Accepted Answer · 2012-06-16 22:37:25Z

A ++ operator is not a language construct of Scala, and the desired behaviour cannot be achieved with a regular method definition. But Scala offers at least some syntactic help, in that a call a += b will be automatically expanded to a = a + b unless a direct method += exists. Thus:

var myInt = 5 myInt += 1

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