snowberb – 15-27 Jul 6

can someone explain to me what this code does in like a really dumb way so everyone could understand it?

const parts = path
    .slice(1)
    .split("/")
    .filter((i) => Boolean(i));
  let res = obj;

  for (let i = 0; i < parts.length; i++) {
    let part = parts[i];
    res = res[part];
  }
return res

const parts = path
    .slice(1)
    .split("/")
    .filter((i) => Boolean(i));
  let res = obj;

  for (let i = 0; i < parts.length; i++) {
    let part = parts[i];
    res = res[part];
  }
return res

4 Replies

lebouwski•2y ago

const parts = path
    .slice(1)
    .split("/")
    .filter((i) => Boolean(i));

const parts = path
    .slice(1)
    .split("/")
    .filter((i) => Boolean(i));

this takes a path like "/foo/bar/baz" and turns it into ['foo', 'bar', 'baz']

let res = obj;

let res = obj;

this is presumably a directory tree, an object like

{
  foo: {
    bar: {
      baz: 42
    }
  }
}

{
  foo: {
    bar: {
      baz: 42
    }
  }
}

and then

  for (let i = 0; i < parts.length; i++) {
    let part = parts[i];
    res = res[part];
  }

  for (let i = 0; i < parts.length; i++) {
    let part = parts[i];
    res = res[part];
  }

traverses the object, going in to each folder. so at the end you'd be left with 42

Unknown User•2y ago

Message Not Public

lebouwski•2y ago

yeah filter(boolean) handles that too

reactibot•2y ago

This thread hasn’t had any activity in 36 hours, so it’s now locked. Threads are closed automatically after 36 hours. If you have a followup question, you may want to reply to this thread so other members know they're related. https://discord.com/channels/102860784329052160/565213527673929729/1126534875214774342

snowberb – 15-27 Jul 6

Did you find this page helpful?