On 10/10/2008, Bruce Leban <bruce@leapyear.org> wrote:

On Thu, Oct 9, 2008 at 3:06 AM, Jan Kanis <jan.kanis@phil.uu.nl> wrote:

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On 08/10/2008, Bruce Leban <bruce@leapyear.org> wrote:

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I don't think this is better. Not that I'm proposing we add macros to

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language but if we did then

macro find(a, x, i): for i in range(len(x)): if x[i]: return lambda: x[i]

would operate differently for find(a, x, i) and find(a, x, i[0]). I

the think

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that's a bad idea.

OK, I screwed up that example.

macro find(a, x, i): for i in range(len(x)): if x[i]: z.append(lambda: x[i])

Yes, that one would behave differently... so IF macros were added (which they won't), and IF someone would find it usefull to pass in the index variable through the macro, instead of just using a regular local variable and not exposing it (for which I don't see any use), this macro would have to be SLIGHTLY REWRITTEN. (And as there are no macros yet, there's no backward compatibility problem). New version: macro find(a, x, i): for j in range(len(x)): i = j # but why would you want that? if x[j]: z.append(lambda: x[j]) Jan