[Python-ideas] combining two threads: switch statements and inline functions

[Ryan Gonzalez]

That's an interesting idea. I'm not sure, though, whether that should be
considered an inline function or a multi-line lambda.


On Tue, Feb 11, 2014 at 5:05 PM, Bruce Leban <bruce at leapyear.org> wrote:

> What if we had the ability to write dictionaries with inline functions in
> them.
>
> def sample(i, op, j):
>     switcher = {{
>        '-':: if i > j:
>                  return i - j
>              else:
>                  return j - i;;
>        '+':: return i + j;;
>     }}
>     return switcher[op]()
>
>
> Please don't pay attention to {{ :: ;; }} which would never be the actual
> syntax or what this code is doing (nothing useful) or whether i or j should
> be passed as parameters rather than closure. This is equivalent to:
>
> def sample(i, op, j):
>     def diff():
>         if i > j:
>             return i - j
>         else:
>             return j - i
>     def add():
>         return i + j
>     switcher = {
>        '-': diff,
>        '+': add,
>     }
>     return switcher[op]()
>
>
> I don't know if there's a good idea here, but I do know that this pattern
> of writing dispatchable functions like this is fairly common, just as the
> switch pattern is. There are some obvious problems, most notably that in
> the switch statement, the scope of the statements is the same as the
> enclosing scope while in this code, each function has it's own scope.
> Notwithstanding that, I thought it was an interesting enough idea to share.
>
> --- Bruce
> Learn how hackers think: http://j.mp/gruyere-security
>
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-- 
Ryan
If anybody ever asks me why I prefer C++ to C, my answer will be simple:
"It's becauseslejfp23(@#Q*(E*EIdc-SEGFAULT. Wait, I don't think that was
nul-terminated."
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