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[Bug 29353] Lossless map:merge

From: <bugzilla@jessica.w3.org>
Date: Thu, 31 Dec 2015 15:28:18 +0000
To: public-qt-comments@w3.org
Message-ID: <bug-29353-523-jOomTWJ2Ii@http.www.w3.org/Bugs/Public/>
https://www.w3.org/Bugs/Public/show_bug.cgi?id=29353

Abel Braaksma <abel.braaksma@xs4all.nl> changed:

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--- Comment #2 from Abel Braaksma <abel.braaksma@xs4all.nl> ---
I would agree that it'd be nice to have a map:merge that can do that. 

I.e., perhaps one that takes a second argument that is a higher order function
which takes a sequence of map entries that contain the same key. However,
writing such a function is trivial (Michael shows one approach, which can be
made higher-order), which you can then use as a generic variant of map:merge.

I doubt that, considering the spec is in CR stage, new functions, or variants
of functions can be added.

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