instance method
Hash#<=
[A, B] (::Hash[A, B]) -> bool
self <= other → true or false
hash.c
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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.