I don't quite get this "string".find()
tim.peters at gmail.com
Thu Nov 11 21:12:51 CET 2004
> Ahh, I see it now. It seems strange to me, but your find helped make
> sense of it.
Indeed, the only way to have "test".find("") *not* return 0 would be
to make a special case out of searching for an empty string. If you
don't make a special case of it, 0 seems to be the necessary result.
> I guess I thought:
> 1) an empty string is like "nothing"
> 2) you can never find "nothing" in something
> But I guess an empty string isn't nothing, but a string with no
> length. Ahh, it's still darned strange :).
Consistency and strangeness often go together <0.7 wink>. I find this
particular one ("every string starts with an empty string") strangest
in this context:
>>> "a" in "abc"
>>> "c" in "abc"
>>> "d" in "abc"
>>> "" in "abc"
In practice, my solution is not to search for empty strings <wink>.
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