CODEWITHSUNDEEP
rubyhash
Tom Baker
Tom Baker

Reputation: 693

`Hash()` when creating a hash

I see many seemingly interchangeable ways to create a hash. The following all create the same hash:

w = {:one => 1, :two => 2}
x = Hash[:one => 1, :two => 2]
y = Hash.[](:one => 1, :two => 2)
z = Hash.send(:[], :one => 1, :two => 2)
huh = Hash(:one => 1, :two => 2)

As for Hash(:one => 1, :two => 2), I expect to find a :() method for Hash in the documentation. Along with the documented method ::[], shouldn't the documentation also list a ::() method?

If they are both just syntactic sugar, where is the latter method documented?

Upvotes: 2

Views: 64

Answers (1)

ndnenkov
ndnenkov

Reputation: 36101

It's a method in Kernel (which contains other methods that you can call directly like Kernel.puts) - Kernel.Hash. Don't use it (it's not idiomatic).

Upvotes: 3

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