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Q: 

what is ||= in ruby?

Possible Duplicate:
What does ||= mean in Ruby?

what is ||= in ruby?

A: 

It's a conditional assignment. If the variable is nil or false it will be replaced with the value on the right hand side; if it already has a value other than nil or false it will keep that value.

Russ Cam  2010-10-15 20:10:12
Oops. Counter-example: `x = false; x ||= 42; x`
pst  2010-10-15 20:14:13
Oops, I missed out the `false` part. Corrected, thanks :)
Russ Cam  2010-10-15 20:18:15

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