Theo's Typesafe Cult•4y ago

Noob Question

Please tell me a better way to do this if u know of any? Is ternary only option?

PerfectOP•11/18/22, 1:41 AM

and by "this" i mean the has own property check (only adding when it exists, setting when it doesnt)

Neto•11/18/22, 1:46 AM

you can

Neto•11/18/22, 1:46 AM

PerfectOP•11/18/22, 1:48 AM

@Neto ah nice, thank you!

PerfectOP•11/18/22, 1:48 AM

much cleaner

PerfectOP•11/18/22, 1:49 AM

the logic is not the same but I see what I can do

PerfectOP•11/18/22, 1:49 AM

appreciate it

Neto•11/18/22, 1:53 AM

the full snippet

Neto•11/18/22, 1:53 AM

const accumulator: Record<string, any> = {}

const postings = [
  {
    sceneId: '123',
    count: 1,
    dl: ''
  },
  {
    sceneId: '123',
    count: 2,
    dl: ''
  },
  {
    sceneId: '144',
    count: 2,
    dl: ''
  }
]

for (const posting of postings) {
  const { sceneId, count } = posting
  if (accumulator[sceneId]) {
    accumulator[sceneId].count += count
  } else {
    accumulator[sceneId] = { ...posting }
  }
}

const accumulator: Record<string, any> = {}

const postings = [
  {
    sceneId: '123',
    count: 1,
    dl: ''
  },
  {
    sceneId: '123',
    count: 2,
    dl: ''
  },
  {
    sceneId: '144',
    count: 2,
    dl: ''
  }
]

for (const posting of postings) {
  const { sceneId, count } = posting
  if (accumulator[sceneId]) {
    accumulator[sceneId].count += count
  } else {
    accumulator[sceneId] = { ...posting }
  }
}