New post: Placing Functions

https://blog.yoshuawuyts.com/placing-functions

I wrote a blog post about placing functions: functions which can return without moving. This is useful for referentially stable constructors, including immovable types, C++ interop, and dyn async traits.

A lot of useful stuff, packaged up in a declarative interface. Oh and: I have a prototype of this working already (albeit entirely using proc macros).

"Arbitrary File Read via file:// Protocol in cURL"

Well, you see... 🤦‍♂️

I am now hearing that using three of something in writing is a sign of AI now.

And not literally a long standard and super effective way of writing.

Delighted to have fucking incurious proud illiterates playing AI whisperer.

I hope you step on a lego em-dash in the dark.

Yes, a file full of zero bits transfers faster over USB2.0 than a file full of one bits.

I've known this forever but it still feels ridiculous when you actually test it and it's true!

USB truly is cursed.

Y'all wanna see an excessively cute trick LLVM's optimizer can do?

Swift String contains roughly this method:

```
func _fastCStringContents() -> UnsafePointer<UInt8> {
if isASCII {
return contentsPointer
}
return nil
}
```

Where `isASCII` is defined as `(flags & 0x8000_0000_0000_0000) != 0`

Would you expect this to generate (solution in reply)

#swiftlang #llvm