I'm new to Rails. I see some special characters.
&:frozen?
&:built?
The code is
[array].reject(&:frozen?)
[array].reject(&:built?)
I checked but I didn't see document for that.
What is the meaning? Thank you
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vietstone
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Reject is a kind of iterator and you sent a method ex. frozen? and it is applied to every element in arry. It is syntax sugar. – MC2DX Aug 08 '14 at 03:39
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Also a duplicate of and is better answered in `http://stackoverflow.com/questions/1217088/what-does-mapname-mean-in-ruby`. – sawa Aug 08 '14 at 03:40
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Is this really a duplicate? It seems to present a few additional questions such as what is `reject` for and what do the `built?` and `frozen?` methods do – JKillian Aug 08 '14 at 03:42
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Eh, after reading the question again I only sort of agree with myself. I am personally curious what `built?` is for – JKillian Aug 08 '14 at 03:43
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@JKillian It's just the pre-existing code that I read. – vietstone Aug 11 '14 at 12:23