Preview Ruby 4.1 is a preview. It can change before the final release. Switch to Ruby 4.0 →

instance method

Set#length

() -> ::Integer

length

static VALUE
set_i_size(VALUE set)
{
    return RSET_SIZE_NUM(set);
}

Alias of #size

Returns the number of elements in self:

Example

Set[*0..9].size # => 10

See also #size #keep_if #map! #join also in 4.0 · 3.4 · 3.3 · 3.2 · 3.1 · 3.0