instance method

Set#flatten!

() -> self?

flatten! → self

static VALUE
set_i_flatten_bang(VALUE set)
{
    bool contains_set = false;
    set_iter(set, set_contains_set_i, (st_data_t)&contains_set);
    if (!contains_set) return Qnil;
    rb_check_frozen(set);
    return set_i_replace(set, set_i_flatten(set));
}

Equivalent to Set#flatten, but replaces the receiver with the result in place. Returns nil if no modifications were made.

See also #flatten #hash #filter! #include? also in 4.1 · 3.4 · 3.3 · 3.2 · 3.1 · 3.0

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