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lift/unlift scala feature / published by https://github.com/dacr/code-examples-manager #3d4c01e1-0654-4485-b77d-0b393eee934a/4ee57d58a5e13948b5056c0a25a942fe2dc196d9
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| // summary : lift/unlift scala feature | |
| // keywords : scala, language-feature, lift, unlift, @testable | |
| // publish : gist | |
| // authors : David Crosson | |
| // license : Apache NON-AI License Version 2.0 (https://raw.githubusercontent.com/non-ai-licenses/non-ai-licenses/main/NON-AI-APACHE2) | |
| // id : 3d4c01e1-0654-4485-b77d-0b393eee934a | |
| // created-on : 2022-06-15T20:39:26+02:00 | |
| // managed-by : https://github.com/dacr/code-examples-manager | |
| // run-with : scala-cli $file | |
| // --------------------- | |
| //> using scala "3.4.2" | |
| // --------------------- | |
| val accesserA = Array(1,2,3).lift | |
| assert(accesserA(1) == Some(2)) | |
| val accesserM = Map(1->"a", 2->"b").lift | |
| assert(accesserM(1) == Some("a")) | |
| def f(i:Int)=Some(i) | |
| val ua = Function.unlift(f) | |
| ua(42) |
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