D'Arcy J.M. Cain wrote:
On Sun, 17 Apr 2011 16:21:53 +1200
Gregory Ewing <greg.ew...@canterbury.ac.nz> wrote:
def get_from_cache(x):
y = cache.get(x)
if not y:
y = compute_from(x)
cache[x] = y
return y
I prefer not to create and destroy objects needlessly.
How does that create objects needlessly?
def get_from_cache(x):
if not x in cache:
cache[x] = compute_from(x)
return cache[x]
That looks up the cache *twice* for every access. Mine
only does one lookup when the item is already in the
cache.
--
Greg
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