Re: [RFC] Syntax for appending elements to arrays

[Jose E. Marchesi]

Adding exceptions and fixing a typo:

([1,2,3]).push (4)

  - Side-effect: [1,2,3] -> [4,1,2,3]
  - Evals to [4,1,2,3]

([1,2,3]).pop

  - Side-effect: [1,2,3] -> [2,3]
  - Evals to 1.
  - Throws E_out_of_bounds if array is empty.

([1,2,3]).put (4)

  - Side-effect: [1,2,3] -> [1,2,3,4]
  - Evals to [1,2,3,4]

([1,2,3]).pull

  - Side-effect: [1,2,3] -> [1,2]
  - Evals to 3
  - Throws E_out_of_bounds if array is empty.