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instance method

Hash#<=

hash <= other_hash → true or false

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 true if hash is a subset of other_hash, false otherwise:

Example

h1 = {foo: 0, bar: 1}
h2 = {foo: 0, bar: 1, baz: 2}
h1 <= h2 # => true
h2 <= h1 # => false
h1 <= h1 # => true

See also #< #== .try_convert #> also in 4.1 · 4.0 · 3.4 · 3.3 · 3.2 · 3.0

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