TypeScript's number type is a lie(bluepnume.medium.com)

4 pointsby bluepnume2 miesiące temu6 comments

bluepnume.medium.com

https://bluepnume.medium.com/typescripts-number-type-is-a-lie-6b3b10dd8f54

6 comments

Supporting operator overloading is part of the linked TS issue [1]. But I'm more curious: why did operator overloading in ES6 itself [2] die?

[1] https://github.com/microsoft/TypeScript/issues/42218

[2] https://github.com/tc39/proposal-operator-overloading

bluepnume2 miesiące temu

Probably if nothing else, impossible to have it perform well without static typing?

glkindlmann2 miesiące temu

But traversing the prototype chain (to figure out method dispatch) is also potentially slow without static typing, and we're managing that ok, no?

bluepnumew zeszłym miesiącu

True enough. Although personally I prefer to just use regular functions rather than big inheritance chains.

newaccountman22 miesiące temu

Am I incorrect in thinking this is not a TypeScript problem, but a problem most languages have, and that TypeScript is one of the few with a neat little solution?

bluepnume2 miesiące temu

In most languages you could probably solve this problem with a class. But wrapping all your numbers in a class with runtime consequences, just for a bit of extra type safety, feels quite extreme.