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annotate python/example/fireonce.py @ 816:c0638ac7fb56

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add hh shortcut
author Jeff Hammel <k0scist@gmail.com>
date Wed, 16 Nov 2016 11:34:13 -0800
parents dbe9086643bf
children
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164
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1 class fireonce(object):
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2 def __init__(self, func):
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3 self.func = func
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4 def __call__(self, *args, **kwargs):
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5 if not self.func:
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6 return None
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7 retval = self.func(*args, **kwargs)
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8 self.func = None
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9
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10 @fireonce
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11 def foo(x):
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12 print x
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13
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14 foo('bar')
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15 foo('fleem') # not printed