Maintenance Ruby 3.3 gets fixes, but no new features. Switch to Ruby 4.0 →
instance method
Hash#length
hash.length → integer
hash.c
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VALUE
rb_hash_size(VALUE hash)
{
return INT2FIX(RHASH_SIZE(hash));
}
Alias of #size
Returns the count of entries in self:
Example
{foo: 0, bar: 1, baz: 2}.length # => 3