method

reject!

v1_9_3_392 - Show latest stable - 0 notes - Class: Hash

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What's this?

reject!() public

Equivalent to Hash#delete_if, but returns nil if no changes were made.

VALUE
rb_hash_reject_bang(VALUE hash)
{
    st_index_t n;

    RETURN_ENUMERATOR(hash, 0, 0);
    rb_hash_modify(hash);
    if (!RHASH(hash)->ntbl)
        return Qnil;
    n = RHASH(hash)->ntbl->num_entries;
    rb_hash_foreach(hash, delete_if_i, hash);
    if (n == RHASH(hash)->ntbl->num_entries) return Qnil;
    return hash;
}

reject!

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