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instance method

Set#===

(untyped other) -> bool

===(p1)

static VALUE
set_i_include(VALUE set, VALUE item)
{
    return RBOOL(RSET_IS_MEMBER(set, item));
}

Returns whether the given object is an element of self:

Example

set = Set[0, :zero, '0']
set.include?('0')    # => true
set.include?('zero') # => false

Tests equality using hash and eql?.

Aliased as ===, which means that sets may be used in case expressions:

Example

case :apple
when Set[:potato, :carrot]
  'vegetable'
when Set[:apple, :banana]
  'fruit'
else
  'unknown'
end
# => "fruit"

See also #include? #== #> #<=> also in 4.0 · 3.4 · 3.3 · 3.2 · 3.1 · 3.0