21 lines
405 B
Python
21 lines
405 B
Python
# Prevents certain properties from having to be recomputed each time they
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# are referenced
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def lazy(f):
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def wrapper(*args, **kwargs):
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o = args[0]
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if "_lazy" not in o.__dict__:
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o.__dict__["_lazy"] = {}
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if f.__name__ not in o.__dict__["_lazy"]:
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o.__dict__["_lazy"][f.__name__] = f(*args, **kwargs)
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return o.__dict__["_lazy"][f.__name__]
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wrapper.__name__ = f.__name__
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return wrapper
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