> Let’s discuss something else. Actually there is an easy fix: make all
> functions accept optionals. I think this is a really bad idea
Indeed.
I don't think there is a good motivation to change the status quo:
You can't "sugar away" everything; sometimes, you just have to write a line of
code that does what you want.
As you can "if let" convert as many optionals as you like in a single
statement, it really doesn't hurt that much.
The precondition stuff looks exactly like guard inside the function to me…
what's the benefit of that?
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