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instance method

Hash#empty?

hash.empty? → true or false

static VALUE
rb_hash_empty_p(VALUE hash)
{
    return RBOOL(RHASH_EMPTY_P(hash));
}

Returns true if there are no hash entries, false otherwise:

Example

{}.empty? # => true
{foo: 0, bar: 1, baz: 2}.empty? # => false

See also #each_value #eql? #each_pair #except also in 4.1 · 4.0 · 3.4 · 3.3 · 3.1 · 3.0