[Webkit-unassigned] [Bug 251319] New: Add iterator adaptor for iterating a set of set of iterators all at once (aka WTF::zippered)

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=251319

            Bug ID: 251319
           Summary: Add iterator adaptor for iterating a set of set of
                    iterators all at once (aka WTF::zippered)
           Product: WebKit
           Version: WebKit Local Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Web Template Framework
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: sam at webkit.org

We should add WTF iterator adaptor to implement the zippering pattern common in other languages and coming one day to c++ via ranges' zip_view and friends (https://en.cppreference.com/w/cpp/ranges/zip_view). It will be a while until we can use ranges, but we don't need to wait for some of the simpler bits.

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