Function that returns an error can be pure

[SHND]

Instead of

A function that returns errors or throws exceptions is an example of a partial function.

Maybe we should remove the returns error part:

A function that throws exceptions is an example of a partial function.

If a function returns an error it may still be pure.

[enricopolanski]

Hey @SHND could you point me to the line?

[SHND]

https://github.com/enricopolanski/functional-programming/blob/d741a9dc11303f4065401a43ceef7a85461372e7/README.md?plain=1#L2299