delete_if()
public
Deletes every element of self for which block evaluates to true.
The array is changed instantly every time the block is called, not after the iteration is over.
See also Array#reject!
If no block is given, an Enumerator is returned instead.
scores = [ 97, 42, 75 ] scores.delete_if {|score| score < 80 } #=> [97]
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artemave -
November 9, 2010
10 thanks
NOT Equivalent to Array#reject!
@tadman is wrong. There is a difference and, trust me, it can bite:
1.9.2 > [1,2,3,4].delete_if {|x| x > 10} => [1, 2, 3, 4] 1.9.2 > [1,2,3,4].reject! {|x| x > 10} => nil
That is, if reject! hasn’t rejected anything, it returns nil.
tadman -
May 13, 2009
3 thanks
Equivalent to Array#reject!
This method is functionally identical to Array#reject!
tadman -
November 14, 2012
0 thanks
What artemave said.
I’d remove my original note if I could, but I can’t see a way how.