Read How Anthropic teams use Claude Code.

TIL there’s the open source handheld CNC router - the 3D designs, firmware, and electronics are all open-source.

Read The Swift Runtime: Heap Objects, Struct Memory Layout.

TIL @frozen has impact on performance:

Marking a structure or enumeration as frozen gives up this flexibility to gain performance: Future versions of the library can make only limited changes to the type, but the compiler can make additional optimizations in code that interacts with the type’s members.

Read Does Swift guarantee the storage order of fields in classes and structs?. Structs and tuples currently share the same layout algorithm, noted as the “Universal” layout algorithm in the compiler implementation. The padding/alignment is different from C.

It refers a bit outdated document Type Layout in Swift Compiler.

Read [swift-users] Mapping C semantics to Swift:

Swift structs have unspecified layout. If you depend on a specific layout, you should define the struct in C and import it into Swift for now.