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Re:Two Weeks of Rust by lmm on Tuesday January 12, 2016 @09:14AM (#10887476)
I have no idea about the popularity, but something like https://github.com/Chris00/ocaml-rope ?
Re:Two Weeks of Rust by danieldk on Tuesday January 12, 2016 @09:34AM (#10887597)
Sorry, I meant specifically:

A good one can detect that only a range of allocation is alive and release unused part of someLargeString.

I do agree that ropes are nice, though they may not be acceptable if you want O(1) indexing or slicing.

Re:Two Weeks of Rust by lmm on Tuesday January 12, 2016 @10:23AM (#10887884)
If you're using a rope representation in a GCed language then you get that for free, no?