Ruby Conditional Assignment with Zero

Question

Easy one for you: What's the Ruby equivalent of this in PHP?

return $x == 0 ? 1 : $x;

sawa · Accepted Answer · 2012-10-19 09:21:10Z

2

If you know that $x is a Numeric, then:

$x.zero? ? 1 : $x

answered Oct 19, 2012 at 9:21

sawa

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Sergio Tulentsev · Accepted Answer · 2012-10-19 09:16:29Z

0

It's the same

 x == 0 ? 1 : x

The ||= shortcut is not applicable here, because 0 is not a "falsy" value, it's true.

answered Oct 19, 2012 at 9:16

Sergio Tulentsev

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3 Comments

benedict_w Over a year ago

Doh! Thanks! I thought I tried that but obviously not! Yes I was expecting ||= to work as PHP would too.

Jörg W Mittag Over a year ago

However, in Ruby, if is an expression, not a statement (in fact, everything is an expression in Ruby, there are no statements), so the use of the conditional operator is never necessary, and using if is often more readable: if x == 0 then 1 else x end.

Sergio Tulentsev Over a year ago

@JörgWMittag: It depends. In this situation I find ternary operator much more readable. It's a matter of taste and background, I guess.

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