Is there a quick (short, character wise) way to get the last element of an array (assuming the array is non-empty)?
I usually do:
last = array[array.length-1]
last = array[-1..]
If you're using a modern version of CoffeeScript, do not use this. Use the answer by dule instead.
If you don't mind modifying the array,
last = array.pop()
If you don't want the array modified,
last = array[..].pop()
That compiles to
last = array.slice(0).pop(). I think it's pretty readable to people already exposed to CoffeeScript or Python slices. However, keep in mind that it will be much slower than
last = array[array.length-1] for large arrays.
I wouldn't recommend
last = array[-1..]. It's short, but I don't think its meaning is immediately obvious. It's all subjective, though.