Rust has an elegant solution to testing private functions: you put the test in the file that defines the function. It generally works well.
I've even seen people argue that it makes mocking much less necessary! I've not felt the need to mock in Rust so far.
miniblog.
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Go has an elegant approach to defining example functions, which are shown in docs as `main()` with the output:
I still find it weird that constructors aren't first class functions in OCaml.
`id Just` is legal in Haskell, but `id Some` is an error in OCaml.
Are there any advantages of the OCaml approach?
Watching https://youtu.be/KWB-gDVuy_I and I'm struck by how weird constructors are as an API.
* They promote total functions, making it hard to do validation.
* They're hard to split up, because they have special access to unfinished data.
* They're like a framework: you get called.