method

select

v1_8_6_287 - Show latest stable - 0 notes - Class: Array

select() public

Invokes the block passing in successive elements from array, returning an array containing those elements for which the block returns a true value (equivalent to Enumerable#select).

   a = %w{ a b c d e f }
   a.select {|v| v =~ /[aeiou]/}   #=> ["a", "e"]

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/*
 *  call-seq:
 *     array.select {|item| block } -> an_array
 *  
 *  Invokes the block passing in successive elements from <i>array</i>,
 *  returning an array containing those elements for which the block
 *  returns a true value (equivalent to <code>Enumerable#select</code>).
 *     
 *     a = %w{ a b c d e f }
 *     a.select {|v| v =~ /[aeiou]/}   #=> ["a", "e"]
 */

static VALUE
rb_ary_select(ary)
    VALUE ary;
{
    VALUE result;
    long i;

    result = rb_ary_new2(RARRAY(ary)->len);
    for (i = 0; i < RARRAY(ary)->len; i++) {
        if (RTEST(rb_yield(RARRAY(ary)->ptr[i]))) {
            rb_ary_push(result, rb_ary_elt(ary, i));
        }
    }
    return result;
}

select

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