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instance method

Set#empty?

() -> bool

empty? → true or false

static VALUE
set_i_empty(VALUE set)
{
    return RBOOL(RSET_EMPTY(set));
}

Returns whether self contains no elements:

Example

Set[].empty?  # => true
Set[0].empty? # => false

See also #each #encode_with #divide #eql? also in 4.0 · 3.4 · 3.3 · 3.2 · 3.1 · 3.0