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instance method

Set#size

() -> ::Integer

size → integer

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

Returns the number of elements in self:

Example

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

See also #select! #subset? #reset #subtract also in 4.0 · 3.4 · 3.3 · 3.2 · 3.1 · 3.0