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
Show source
Register or log in to add new notes.
May 26, 2012 - (v1_9_3_125)
0 thanks

rindex with identically array elements

Code Example

a = [1,1,1]
a.rindex( a.min ) #=> 2