![[identity profile]](https://www.dreamwidth.org/img/silk/identity/openid.png) cartesiandaemon.livejournal.com |
Fri 2011-03-18 10:48 |
:)
Thank you. I don't think I quite thought through what i did want. But i think that where I'm going is that if you want to use a function to represent the "compare el against head, except ignore the first and every second match" logic instead of a simple local var, it needs to identify when its part of the same loop and when it isn't, which it might be able to do with a combination of (a) using some thead local storage or thread id to maintain when the next call is from the same thread and (b) using a line directive to determine when its called from different (nested) places in the same file and thread.
Your solution is probably right because it uses syntax to resolve a problem with insufficiently expressive syntax. Whereas mine (if it worked) would be how to solve a problem if the constraints here were logical parts of the program for some reason.
I agree it's horrendous, that's why i recommend using a language with convenient local variables, fewer macros, etc, etc :) |
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