[Python-Dev] Re: Re: anonymous blocks

Fredrik Lundh fredrik at pythonware.com
Wed Apr 20 08:55:03 CEST 2005

Shane Hathaway wrote:

> Brian's suggestion makes the code read more like an outline.  In Brian's
> example, the high-level intent stands out from the details

that assumes that when you call a library function, the high-level intent of
*your* code is obvious from the function name in the library, and to some
extent, by the argument names chosen by the library implementor.

I'm not so sure that's always a valid assumption.

> while in your example, there is no visual cue that distinguishes the details
> from the intent.

carefully chosen function names (that you chose yourself) plus blank lines
can help with that.

> Of course, lambdas are even better, when it's possible to
> use them:
>    doFoo((lambda a, b: a + b), (lambda c, d: c + d))

that only tells you that you're calling "doFoo", with no clues whatsoever to
what the code in the lambdas are doing.  keyword arguments are a step up
from that, as long as your intent matches the library writers intent.


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