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js defaultdict

Fine Falcon answered on May 28, 2021 Popularity 8/10 Helpfulness 3/10

answer js defaultdict

related defaultdict in javascript

js defaultdict

Comment

function makeDefaultDict(factory) {
    return new Proxy({}, {
        get(target, name) {
            if (!(name in target)) {
                target[name] = factory()
            }
            return target[name]
        }
    })
}

Popularity 8/10 Helpfulness 3/10 Language javascript

Source: Grepper

Tags: defaultdict javascript

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Contributed on May 28 2021

Fine Falcon

0 Answers Avg Quality 2/10

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defaultdict in javascript

Comment

class DefaultDict {
  constructor(defaultVal) {
    return new Proxy({}, {
      get: (target, name) => name in target ? target[name] : defaultVal
    })
  }
}

const counts = new DefaultDict(0)
console.log(counts.c) // 0

Popularity 6/10 Helpfulness 1/10 Language javascript

Source: stackoverflow.com

Tags: defaultdict javascript

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Contributed on Dec 10 2022

Thoughtful Tiger

0 Answers Avg Quality 2/10

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js defaultdict

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defaultdict in javascript

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