method
rindex
v1_9_3_125 -
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- Class:
Array
rindex(p1)public
Returns the index of the last object in self
to obj. If a block is given instead of an
argument, returns index of first object for which block is true, starting from the last object. Returns nil if no match is found. See also Array#index.
If neither block nor argument is given, an enumerator is returned instead.
a = [ "a", "b", "b", "b", "c" ] a.rindex("b") #=> 3 a.rindex("z") #=> nil a.rindex{|x|x=="b"} #=> 3
1Note
rindex with identically array elements
=== Code Example a = [1,1,1] a.rindex( a.min ) #=> 2