Method: Hash#size

Defined in:

hash.c

#length ⇒ Fixnum #size ⇒ Fixnum

Returns the number of key-value pairs in the hash.

h = { "d" => 100, "a" => 200, "v" => 300, "e" => 400 }
h.length        #=> 4
h.delete("a")   #=> 200
h.length        #=> 3

Overloads:

• #length ⇒ Fixnum

  Returns:

  • (Fixnum)
• #size ⇒ Fixnum

  Returns:

  • (Fixnum)

# File 'hash.c', line 1563

VALUE
rb_hash_size(VALUE hash)
{
    return INT2FIX(RHASH_SIZE(hash));
}