Flowdock
size() public

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

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

Hash#length is an alias for Hash#size.

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