Re: novice: mapcan use?

Kenny Tilton <ktilton@xxxxxxxxxx> writes:

> Except I am starting to think /you/ are not sure when destructive
> functions can be safely used. Hey, good question. Do /you/ follow your
> own recommended practice of always using non-destructive functions? Is
> the only time you use delete when you have a performance problem and
> are trying to fix it?

Sometimes I've had shared structure where I did not expect it. This
is what makes destructive operators dangerous.

Of course that does not stop me from using the destructive forms of
operators when I am sure there is no shared structure involved.

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