How to remove strings from all elements in array?

Question

How can i remove a repeating string keyword from all elements in an array ?

Chuck · Accepted Answer · 2009-11-17 00:21:08Z

6

I think you mean you have an array of strings and they all contain some substring that you want to remove. Non-destructively:

array.map {|s| s.gsub(keyword, '')}

Use destructive variants as desired to do it in-place.

answered Nov 17, 2009 at 0:21

Chuck

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3 Comments

here's a destructive (in-place) example: array.each {|word| word.delete!('aeiou')}

here's another destructive (in-place) example: array.map! {|word| word.gsub(keyword,'')}

we are the destructoglenns

brianegge · Accepted Answer · 2009-11-17 00:21:25Z

1

Are you referring to string in the array, or non-unique elements. For the first, use the uniq method:

p ["foo", "bar", "foo", "baz"].uniq
["foo", "bar", "baz"]

For the latter, try something like:

p ["foo", "bar", "foo", "baz"].map { |x| x.gsub('oo', '') }
["f", "bar", "f", "baz"]

answered Nov 17, 2009 at 0:21

brianegge

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