RCR 337: Integer#odd?, #even?
Submitted by Vince (Fri May 26 17:15:37 UTC 2006)
Abstract
It would make programs clearer if one could use odd? or even? to check the parity of an integer.
Problem
It is often useful to check if an integer is even or odd. While using
if i % 2 == 0
does work fine, it would be way better, for readability, if we could write
if i.even?
Proposal
I propose to add two functions to the class Integer: Integer#odd? and Integer#even? that do what they sound to.
Analysis
This RCR doesn't break a single thing and should be fairly trivial to implement.
Implementation
class Integer
def even?
return self % 2 == 0
end
def odd?
return self % 2 == 1
end
end
This is something that's so simple and straightforward that when I came to Ruby, I expected it to be there already -- Daniel Schierbeck
This has been suggested so many times that I think Matz should just give in so as not to hear it suggested again ;)
Yeah i also think its a good idea to have this - shev
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| Strongly opposed |
0 |
| Opposed |
0 |
| Neutral |
0 |
| In favor |
9 |
| Strongly advocate |
6 |
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This has been suggested so many times that I think Matz should just give in so as not to hear it suggested again ;)
Yeah i also think its a good idea to have this - shev