[PATCH] D24880: Add StringExtras join_items function

[Zachary Turner via llvm-commits]

zturner added a comment.

Also I feel like `Twine(foo() + '/' bar() + '/' + baz()).str()` is a big more difficult to visually grok than `llvm::join_items('/', foo(), bar(), baz());`


https://reviews.llvm.org/D24880