// Alternate timeline async/await var [err, res] = await foo() if (err) return err
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This is similar to Rust and Go. Go uses positional arguments, where Rust uses enums. Imagine a timeline where we could have Rust-style error handling. No more try-catch blocks. Perhaps we still can. // '?' returns an error if there's an error var res = await foo()?
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Polymorphic arguments don't optimize well though; this would probably kill performance unfortunately :(
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ohhh we had it, for a long time actually, it was bad. Callback pattern you'd see everywhere: function(err, res) { if (err) { return ... } // expected flow here
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Respectfully disagree this is the same & this is bad.
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this would be soooo rad
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I've always thought that the Go-ish style from your first tweet is nice! Luckily it can be achieved with a helper/util :)
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Except the consumer might not quite expect an error to be returned, of course...
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I don't do async/await, but if I did, this would be my take on it. const {success, data} = await foo() if(!success) { console.error(data) return } console.log('success:', data)
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