Preview Ruby 4.1 is a preview. It can change before the final release. Switch to Ruby 4.0 →
instance method
Hash#<=
(::hash[untyped, untyped] other_hash) -> bool
self <= other → true or false
hash.c
View on GitHub ↗
static VALUE
rb_hash_le(VALUE hash, VALUE other)
{
other = to_hash(other);
if (RHASH_SIZE(hash) > RHASH_SIZE(other)) return Qfalse;
return hash_le(hash, other);
}
Returns whether the entries of self are a subset of the entries of other:
Example
h0 = {foo: 0, bar: 1} h1 = {foo: 0, bar: 1, baz: 2} h0 <= h0 # => true h0 <= h1 # => true h1 <= h0 # => false
See Hash Inclusion.
Raises TypeError if other_hash is not a hash and cannot be converted to a hash.
Related: see Methods for Comparing.