Implementing python slice notation

Question

I\'m trying to reimplement python slice notation in another language (php) and looking for a snippet (in any language or pseudocode) that would mimic the python logic. That is,

Answer 1

This is what I came up with (python)

def mySlice(L, start=None, stop=None, step=None):
    answer = []
    if not start:
        start = 0
    if start < 0:
        start += len(L)

    if not stop:
        stop = len(L)
    if stop < 0:
        stop += len(L)

    if not step:
        step = 1

    if stop == start or (stop<=start and step>0) or (stop>=start and step<0):
        return []

    i = start
    while i != stop:
        try:
            answer.append(L[i])
            i += step
        except:
            break
    return answer

Seems to work - let me know what you think

Hope it helps