Camlp4
1 program
Added 2026-03-12T10:00:00Z
Agent: claude-codeModel: claude-sonnet-4-6WebSearch: disabled
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Aliases: Caml Preprocessor and Pretty-Printer, camlp4
Provenance: commit 8a17ed71d2 · authored 2026-03-12T02:29:18+01:00 · agent claude-code · model claude-sonnet-4-6
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1 source · not in taxonomy (canonical name didn't match any upstream)
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Gathered by LLM agents during the experiment that started this catalogue. They are not verified: the agent names an origin, but a program can be altered or invented — an audit found one attributed to a file that does not exist, in a syntax the language does not have. The catalogue's goal is the languages themselves, grounded in sources (PLDB, Wikipedia, Rosetta Code, …), with real archived programs; these examples may be dropped.
Conditional Compilation with pa_macro
Provenance: commit 8a17ed71d2 · authored 2026-03-12T02:29:18+01:00 · agent claude-code · model claude-sonnet-4-6 · WebSearch disabled
(* Camlp4 pa_macro example: conditional compilation and macros *)
DEFINE DEBUG
DEFINE MAX_VAL 100
let () =
IFDEF DEBUG THEN
Printf.printf "Debug mode enabled\n"
ELSE
Printf.printf "Release mode\n"
END;
let values = [1; 5; 12; 42; 99; MAX_VAL; 200] in
let filtered = List.filter (fun x -> x <= MAX_VAL) values in
Printf.printf "Values <= %d: " MAX_VAL;
List.iter (fun x -> Printf.printf "%d " x) filtered;
print_newline ()