core.fork

0.000000

Proc's default mode is to pipe the return value of a proc to the next proc in a composition. core.fork provides a way to alter this behavior, calling the forked composition but returning the original input instead of the return value of the composition. Below, the modified value is persisted to the key-value store but the original input is returned.

authorization=PROCAUTH

require "proc"

client = Proc.connect("PROCAUTH")

const Proc = require("@proc.dev/client");
const client = Proc.connect("PROCAUTH");

client.core.fork {
  client.type.string.upcase >> client.keyv.set(
    bucket: "q839ffa7"
  )
}.call("hello")

client.core.fork.call("hello", {}, () => {
  return client.type.string.upcase.compose(
    client.keyv.set(
      undefined, q839ffa7
    );
  );
});

curl "https://proc.run/core/fork" --silent \
--header "authorization: bearer $authorization" \
--header "content-type: application/vnd.proc+json" \
--header "accept: text/plain" \
--data '[[">>", ["%%", "hello"]], ["$$", "proc", ["q839ffa7"]]]]]]'

Values in Proc are immutable, so the return value of core.fork will always be the given input value.