Replace method on Array

Question

I have an array:

array = [1,2,3,4,5,2,6,7,2,8,9,2,10]

I want to replace all the 2s with 'x' and can't do this. I tried:

I'm making this harder than it is.

the Tin Man · Accepted Answer · 2014-10-21 17:12:43Z

3

I'd use:

array = [1,2,3,4,5,2,6,7,2,8,9,2,10]

array.map!{ |e| e == 2 ? 'x' : e }
array # => [1, "x", 3, 4, 5, "x", 6, 7, "x", 8, 9, "x", 10]

map! changes array, but if you don't want to change the array itself:

foo = array.map{ |e| e == 2 ? 'x' : e }
array # => [1, 2, 3, 4, 5, 2, 6, 7, 2, 8, 9, 2, 10]
foo # => [1, "x", 3, 4, 5, "x", 6, 7, "x", 8, 9, "x", 10]

answered Oct 21, 2014 at 17:12

the Tin Man

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2 Comments

man, i feel like an idiot... thanks Tin Man! I still have 9 minutes on the accept...

Personally, I prefer a conditional expression over the conditional operator: array.map {|e| if e == 2 then 'x' else e end }