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• rust

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  Empowering everyone to build reliable and efficient software.

  

The problem for the `if/else` case is that we need to identify the trait that both arms should be coerced to, and that set could potentially be huge, and any suggestion should skip things like std::fmt::Display. That's why the suggestion I showed earlier only works on tail expressions, we can get the type from the return type and work from there, and even account for someone writing `-> Trait` and suggest all the appropriate changes.

I just filed https://github.com/rust-lang/rust/issues/84346 to account for some cases brought up and I completely agree with your last sentence. It is something that others and I have been doing piecemeal for a while now and would encourage you (and anyone else reading this) to file tickets for things like these at https://github.com/rust-lang/rust/issues/

• fp-ts

  97 10,493 7.0 TypeScript

  Functional programming in TypeScript

• SurveyJS

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  Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.

  

• io-ts

  80 6,602 4.9 TypeScript

  Runtime type system for IO decoding/encoding

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