view python/fireonce.py @ 253:8593b0384d3e

add a function for computing primes
author Jeff Hammel <jhammel@mozilla.com>
date Mon, 10 Dec 2012 11:08:21 -0800 (2012-12-10)
parents 8006938c33ac
children
line wrap: on
line source
class fireonce(object):
    def __init__(self, func):
        self.func = func
    def __call__(self, *args, **kwargs):
        if not self.func:
            return None
        retval = self.func(*args, **kwargs)
        self.func = None

@fireonce
def foo(x):
    print x
    
foo('bar')
foo('fleem') # not printed