Kata

In this kata, you need to code a function that takes two parameters, A and B, both representing letters from the English alphabet.

It is guaranteed that:

1. Both letters are the same case (Either both are uppercase or both are lowercase, never a mix)
2. B is always a letter that comes after A in the alphabet (or is the same letter). For instance (A="A", B="F") and (A="g", B = "g") are valid parameter sets for the function. On the other hand (a="N" b="H") is not

Your mission, if you accept it, is to write a function slice() that returns the inclusive slice of the English alphabet starting at A and ending at B. A few examples are provided for clarity:

slice("A", "B") --> "AB"
slice("D", "H") --> "DEFGH"
slice("f", "f") --> "f"
slice("x", "z") --> "xyz"

Astute readers will probably think there may be a catch given the Kyu rating on this Kata. And you would be wrong! There is not ONE catch, not TWO, But THREE catches (a-ha-ha)

1. Your code can at most be two lines long
2. You code can at most be 100 charaters long
3. Finally, you may not use the quoting characters (' and ") as well as "str" or square braces in your code

(Note to contributors: Please inform me if there is any hack I might have missed that would allow a too-trivial solution for this to exist.)

Happy coding!