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Date: Thu, 2 Feb 2012 10:29:58 +0000
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Reply-To: Mailing list for the LaTeX3 project <[log in to unmask]>
Subject: Mapping Functions Versions for All and Some
From: dongen <[log in to unmask]>
Message-ID: <20120202102957.GB14566@csmvddesktop>
MIME-Version: 1.0
Sender: Mailing list for the LaTeX3 project <[log in to unmask]>
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Howsagoin,


I've started exploring the LaTeX3 sources documentation but
I couldn't find the equivalent of the following predicate
functions for token lists:

 o  \tl_all_TF:NNTF <token list> <predicate> <true> <false>
    results in <true> if all members of <token list> satisfy
    <predicate>. The semantics should be that the evaluation
    is start-to-finish of <token list> but that the evaluation
    is aborted as soon as one of the tokens in <token list>
    doesn't satisfy <predicate>.
 o  \tl_some_TF:NNTF <token list> <predicate> <true> <false>
    results in <true> if some member of <token list> satisfies
    <predicate>. The semantics should be that the evaluation
    is start-to-finish of <token list> but that the evaluation
    is aborted as soon as one of the tokens in <token list>
    satisfies <predicate>.

Similar versions may also be useful for other kinds of lists.

Are such macros defined? If not, do you think it's a good idea
to introduce them?

Regards,


Marc van Dongen

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