Hacker News Reader

Even if the file is cached, fread has to do a memcpy. mmap doesn't.

fread is (usually) buffered io, so it actually does two additional mem copies (kernel to FILE buffer then to user buffer)

Not in Go

oh, right, this is Go (https://pkg.go.dev/github.com/odeke-em/go-utils/fread#sectio...). Do the strings it return share memory with the internal buffer?