Towards generic programming in F#: thoughts on generalizing the earlier combinators over records and unions... I wrote earlier a little post on combinators over records and unions. This approach in F# is still very attractive to me for defining various converters and serializers because it (1) uses no reflection and thus works in JavaScript via WebSharper out of the box; (2) gives the programmer full control to drop out of combinators anywhere where specific (more optimal, or custom) behavior is needed;[...]