Increment variable in ruby

Question

In Java, something like i++ would increment i by 1.

How can I do in Ruby? Surely there has to be a better way than i = i + 1?

This doesn't show a lot of effort. Google would have turned up numerous hits for "[ruby increment operator](https://www.google.com/search?q=ruby+increment+operator)" including "[No increment operator (++) in Ruby?](http://stackoverflow.com/questions/3717519/no-increment-operator-in-ruby)", plus the afore-mentioned question. — the Tin Man, Sep 30 '13 at 18:30
I think this is a different question. He's asking how you do it, not why there is no support for it. — Tony, Feb 11 '14 at 18:56

score 157 · Accepted Answer · answered Sep 30 '13 at 15:28

157

Ruby has no pre/post increment/decrement operator. For instance, x++ or x-- will fail to parse

So, you can do

i += 1

which is equivalent of i = i + 1

answered Sep 30 '13 at 15:28

karthikr

does this create new memory? str = str + 'a' – baash05 Mar 18 '14 at 01:12
but i need to initialize i before? – Arnold Roa Jun 20 '16 at 19:46
8

This sucks for a language emphasising on writing less code. – Varun Garg Nov 29 '18 at 10:13
1

Varun Garg I agree as well since many other languages have this feature, but I also understand they wanted to keep it simple, but then I feel like Ruby has enough of it's own quirks to complicate it in it's own special way lol. – CTS_AE Feb 03 '19 at 10:01

1 Answers1