Method: Array#select!

Defined in:
array.c

#select! {|item| ... } ⇒ Array? #select! ⇒ Enumerator

Invokes the given block passing in successive elements from self, deleting elements for which the block returns a false value.

If changes were made, it will return self, otherwise it returns nil.

See also Array#keep_if

If no block is given, an Enumerator is returned instead.

Overloads:



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# File 'array.c', line 2818

static VALUE
rb_ary_select_bang(VALUE ary)
{
    long i1, i2;

    RETURN_SIZED_ENUMERATOR(ary, 0, 0, ary_enum_length);
    rb_ary_modify(ary);
    for (i1 = i2 = 0; i1 < RARRAY_LEN(ary); i1++) {
	VALUE v = RARRAY_AREF(ary, i1);
	if (!RTEST(rb_yield(v))) continue;
	if (i1 != i2) {
	    rb_ary_store(ary, i2, v);
	}
	i2++;
    }

    if (i1 == i2) return Qnil;
    if (i2 < i1)
	ARY_SET_LEN(ary, i2);
    return ary;
}