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Re: arg-order of test-fn for #'position
- To: firstname.lastname@example.org (Ulrich Becker)
- Subject: Re: arg-order of test-fn for #'position
- From: kab (Kim Barrett)
- Date: Mon, 07 Nov 94 01:58:02 EST
- Cc: email@example.com
- Sender: firstname.lastname@example.org
> I need to find the position of the first item in a list of numbers
> that is smaller than a given number. I thought it might be possible
> to use the position-function for this purpose, using it that way:
> (position given-number list-of-numbers :test #'>)
> This of course works only if given-number is the first arg and
> the item in list-of-numbers is the second arg passed to the
> test-function (which is true for MCL). My question is: Is this true
> for all CL implementations, or is the ordering of arguments passed
> to the test-function implementation-dependent?
This is portable (up to bugs, of course).
See the dpANS glossary entry for "satisfies the test" (or CLtL2 p.391).