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kotlinlang

I may have created a few impure properties in the past, but it might be a good default recommendation not to do that.

in my glm port, I have `Float.rad` to convert deg-&gt;rad, `Float.sin` and `.cos`, etc.. do you consider it bad?

No, not at all. Why would you think so? These are pure functions.

However I don't like how the resulting client code would look like. `x.sin` not readable as simply `sin(x)`.

Impure functions are those with implicit dependencies, i.e. may not return the same value for given set or arguments. `now` is a good example, but anything non-purely functional really, like using `Random().newInt()` inside such functions.

I still think `sin(x)` makes more sense for pure functions because thats the default mathematical syntax, you never see `x.sin` out there

<@U12HXPV3L> yeah, you are right, but I find it somehow attractive because it has no parenthesis and it kind of follow the logic flow of "taking x and calculate sin"