Method: Struct#select

Defined in:
struct.c

#select {|i| ... } ⇒ Array #select ⇒ Object

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

Lots = Struct.new(:a, :b, :c, :d, :e, :f)
l = Lots.new(11, 22, 33, 44, 55, 66)
l.select {|v| (v % 2).zero? }   #=> [22, 44, 66]

Overloads:

  • #select {|i| ... } ⇒ Array

    Yields:

    • (i)

    Returns:



# File 'struct.c'

/*
 *  call-seq:
 *     struct.select {|i| block }    -> array
 *     struct.select                 -> an_enumerator
 *
 *  Invokes the block passing in successive elements from
 *  <i>struct</i>, returning an array containing those elements
 *  for which the block returns a true value (equivalent to
 *  <code>Enumerable#select</code>).
 *
 *     Lots = Struct.new(:a, :b, :c, :d, :e, :f)
 *     l = Lots.new(11, 22, 33, 44, 55, 66)
 *     l.select {|v| (v % 2).zero? }   #=> [22, 44, 66]
 */

static VALUE
rb_struct_select(int argc, VALUE *argv, VALUE s)
{
    VALUE result;
    long i;

    if (argc > 0) {
    rb_raise(rb_eArgError, "wrong number of arguments (%d for 0)", argc);
    }
    RETURN_ENUMERATOR(s, 0, 0);
    result = rb_ary_new();
    for (i = 0; i < RSTRUCT_LEN(s); i++) {
    if (RTEST(rb_yield(RSTRUCT_PTR(s)[i]))) {
        rb_ary_push(result, RSTRUCT_PTR(s)[i]);
    }
    }

    return result;
}