boolean-algebra.py

'''
author: Jacob Egner
date: 2015-07-27
island: elementary

for latest versions of my solutions, see my checkio solution github repo:
https://github.com/jmegner/CheckioPuzzles

'''


def boolean(x, y, operation):
    operationToFunc = {
        "conjunction": lambda a, b: a and b,
        "disjunction": lambda a, b: a or b,
        "implication": lambda a, b: not a or b,
        "exclusive":   lambda a, b: a != b,
        "equivalence": lambda a, b: a == b,
    }

    return operationToFunc[operation](x, y)


if __name__ == '__main__':
    #These "asserts" using only for self-checking and not necessary for auto-testing
    assert boolean(1, 0, "conjunction") == 0, "and"
    assert boolean(1, 0, "disjunction") == 1, "or"
    assert boolean(1, 1, "implication") == 1, "material"
    assert boolean(0, 1, "exclusive") == 1, "xor"
    assert boolean(0, 1, "equivalence") == 0, "same?"