How to do array addition in a smart way? [duplicate]

Question

Possible Duplicate:
How to sum array members in Ruby?

Lets say I have this array

@test = [1, 2, 3, 4]

Then I want to do:

@test[0] + @test[1] + @test[2] + @test[3]

Is there not a smarter, faster way of doing this?

Answer 1

You can do this:

@test.inject(:+)

Answer 2

sum = 0
@test.each { |el| sum+=el }