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This is the lambda syntax in Ruby: Defining a lamba `foo = ->(x) { x * x }` Calling it `foo[10]` or `foo.call(10)` I don't see anything hacky about that at a

This is the lambda syntax in Ruby: Defining a lamba `foo = ->(x) { x * x }` Calling it `foo[10]` or `foo.call(10)` I don't see anything hacky about that at all.