MarseyWorld/files/helpers/lazy.py

19 lines
399 B
Python

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