# Pythonic equality operation, the purpose of this module is to bring Python's deep
# equality to JavaScript, and fix any expectations for list traversal


Array.prototype.indexOf = def(subject, target, fromIndex):
    length = subject.length
    i = 0

    if typeof(fromIndex) is 'number':
        i = 0
        if i < 0:
            i += length
            if i < 0:
                i = 0

    while i < length:
        if subject[i] == target:
            return i
        i += 1

    return -1


Array.prototype.lastIndexOf = def(subject, target, fromIndex):
    length = subject.length
    i = length - 1

    if typeof(fromIndex) is 'number':
        i = fromIndex
        if i < 0:
            i += length

    while i >= 0:
        if subject[i] == target:
            return i
        i -= 1

    return -1