56 lines
1.6 KiB
Python
56 lines
1.6 KiB
Python
# Based on http://stackoverflow.com/a/2022629
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class Event(list):
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def __call__(self, *args, **kwargs):
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for f in self[:]:
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if "once" in dir(f) and f in self:
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self.remove(f)
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f(*args, **kwargs)
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def __repr__(self):
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return "Event(%s)" % list.__repr__(self)
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def once(self, func, name=None):
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func.once = True
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func.name = None
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if name: # Dont function with same name twice
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names = [f.name for f in self if "once" in dir(f)]
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if name not in names:
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func.name = name
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self.append(func)
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else:
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self.append(func)
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return self
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if __name__ == "__main__":
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def testBenchmark():
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def say(pre, text):
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print("%s Say: %s" % (pre, text))
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import time
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s = time.time()
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on_changed = Event()
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for i in range(1000):
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on_changed.once(lambda pre: say(pre, "once"), "once")
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print("Created 1000 once in %.3fs" % (time.time() - s))
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on_changed("#1")
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def testUsage():
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def say(pre, text):
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print("%s Say: %s" % (pre, text))
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on_changed = Event()
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on_changed.once(lambda pre: say(pre, "once"))
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on_changed.once(lambda pre: say(pre, "once"))
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on_changed.once(lambda pre: say(pre, "namedonce"), "namedonce")
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on_changed.once(lambda pre: say(pre, "namedonce"), "namedonce")
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on_changed.append(lambda pre: say(pre, "always"))
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on_changed("#1")
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on_changed("#2")
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on_changed("#3")
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testBenchmark()
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