I am trying to devise a pretty-printer for an Env.t type. An Env.t is simply a map from identifiers to values, i.e. a Value.t IdMap.t. let pp fmt env = let open Format in fprintf fmt "[ @[<v 2>"; env |> IdMap.iter (fun id val_ -> fprintf fmt "@[<hov 2>%s ->@ %a@]@." id Value.pp …

[image] otini: @. You are flushing the pretty printer. This closes all open boxes and starts over. You wanted to write @,. [image] otini: would using Fmt make my life easier? No. Except for a few nice additions, Fmt is essentially Format with the right names for concise definitions.

Will I ever understand Format? or How to print a list vertically with indentation

Learning

gaga August 27, 2022, 12:19pm 16

There is also a nice document called “Format Unraveled”, if you want to learn more about Format. It can be found here

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Will I ever understand Format? or How to print a list vertically with indentation

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