[erlang-questions] lists:keyfind as an alternative to lists:keysearch

Thomas Lindgren thomasl_erlang@REDACTED
Wed Jan 21 13:54:14 CET 2009

--- On Wed, 1/21/09, Bengt Kleberg <bengt.kleberg@REDACTED> wrote:
> Rickard has my support. I, too, find mixing boolean and
> none boolean
> return values surprising.
> Perhaps {} (empty tuple) is an appropriate return value if
> nothing is
> found?

Personally, I nearly always wrap lookup return values as

   {found, Value} | not_found

Which has served me quite well so far.

(And not that it really matters for this discussion, but returning an empty tuple allocates a tuple header on the heap :-)



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