method

uniq

Ruby latest stable (v1_8_7_72) - 1 note - Class: Array

1_8_6_287 (0)
1_8_7_72 (0)
What's this?

uniq() public

Returns a new array by removing duplicate values in self.

   a = [ "a", "a", "b", "b", "c" ]
   a.uniq   #=> ["a", "b", "c"]

Show source

/*
 *  call-seq:
 *     array.uniq   -> an_array
 *  
 *  Returns a new array by removing duplicate values in <i>self</i>.
 *     
 *     a = [ "a", "a", "b", "b", "c" ]
 *     a.uniq   #=> ["a", "b", "c"]
 */

static VALUE
rb_ary_uniq(ary)
    VALUE ary;
{
    ary = rb_ary_dup(ary);
    rb_ary_uniq_bang(ary);
    return ary;
}

January 25, 2010

1 thank

custom uniq method

Build hash from elements of your Array using attribute as key and the element as value and return values of Hash:

 Hash[*ary.map {|obj| [obj.name, obj]}.flatten].values

uniq

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custom uniq method