Hash.try_convert

[U, V] (::_ToHash[U, V]) -> ::Hash[U, V]

(untyped) -> (::Hash[untyped, untyped] | nil)

Hash.try_convert(obj) → obj, new_hash, or nil

static VALUE
rb_hash_s_try_convert(VALUE dummy, VALUE hash)
{
    return rb_check_hash_type(hash);
}

If obj is a Hash object, returns obj.

Otherwise if obj responds to :to_hash, calls obj.to_hash and returns the result.

Returns nil if obj does not respond to :to_hash

Raises an exception unless obj.to_hash returns a Hash object.

See also .ruby2_keywords_hash? #< .ruby2_keywords_hash #<= also in 4.1 · 4.0 · 3.3 · 3.2 · 3.1 · 3.0