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Thanks for the nice answer. One question though: why lensing does not create any issues for concurrency? (like if it is similar to mutables, it would make sense if it has the same problems with concurrency)

Daniel
– Daniel

2017-02-08 21:29:28 +00:00
Commented Feb 8, 2017 at 21:29
2

Lensing is still immutable, it just creates an API that resembles a deep mutation. When you do a "set" anyone else who has a reference to any part of the old structure will still have the old unmodified value. You have to assign the result to a new variable in a new scope.

Karl Bielefeldt
– Karl Bielefeldt

2017-02-08 22:41:15 +00:00
Commented Feb 8, 2017 at 22:41

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