core hello world / workshop / async / manifest.ml

open Core.Std
open Async.Std

let file_size filename =
  Reader.file_contents filename >>| String.length

let manifest_size manifest_filename =
  Reader.file_lines manifest_filename
  >>= fun manifest ->
  Deferred.all (List.map ~f:file_size manifest)
  >>= fun lengths ->
  return (List.fold ~f:(+) ~init:0 lengths)
;;

let run () =
  manifest_size "MANIFEST"
  >>= fun manifest_size ->
  printf "Total file size: %d\n" manifest_size;
  shutdown 0;
  return ()
;;

let () =
  don't_wait_for (run ());
  never_returns (Scheduler.go ());
Tip: Filter by directory path e.g. /media app.js to search for public/media/app.js.
Tip: Use camelCasing e.g. ProjME to search for ProjectModifiedEvent.java.
Tip: Filter by extension type e.g. /repo .js to search for all .js files in the /repo directory.
Tip: Separate your search with spaces e.g. /ssh pom.xml to search for src/ssh/pom.xml.
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Tip: You can also navigate files with Ctrl+j (next) and Ctrl+k (previous) and view the file with Ctrl+o.
Tip: You can also navigate files with Alt+j (next) and Alt+k (previous) and view the file with Alt+o.