Comment by edflsafoiewq

Here are some examples from the linked paper

* Converting enum values to strings, and vice versa

* Parsing command line arguments from a struct definition (like Rust's clap)

* Simple definition of tuple and variant types, without the complex metaprogramming tricks currently used

* Automatic conversion between struct-of-arrays and array-of-structs form

* A "universal formatter" that can print any struct with all its fields

* Hashing a struct by iterating over its fields

* Convert between a struct and tuple, tuple concatenation, named tuples