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Date: Sun, 17 Apr 2011 14:31:06 +1000
Subject: Re: Feature suggestion -- return if true
From: Chris Angelico <rosuav@gmail.com>
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Xref: x330-a1.tempe.blueboxinc.net comp.lang.python:3371

On Sun, Apr 17, 2011 at 2:21 PM, Gregory Ewing
<greg.ewing@canterbury.ac.nz> wrote:
> My idiom for fetching from a cache looks like this:
>
> =A0def get_from_cache(x):
> =A0 =A0y =3D cache.get(x)
> =A0 =A0if not y:
> =A0 =A0 =A0y =3D compute_from(x)
> =A0 =A0 =A0cache[x] =3D y
> =A0 =A0return y
>
> which doesn't require any conditional returns.

There's not a lot of difference between conditionally returning and
conditionally executing all the code between here and the return,
except that when you string three conditional returns together by your
method, it gets three indentations.

Chris Angelico