Question 54186 in Javascript Question posted in
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How to remove dublicate functions inside an array? – Javascript

I have 3 functions

const func1 = () => {
  return 1
}
const func2 = () => {
  return 1
}
const func3 = () => {
  return 2
}
let arr = [func1, func2, func3]

how can I filter dublicates (func1 and func2) from arr, so that I will have something like this filteredArr=[()=>{return 1},()=>{return 2}] ?

tried to stringify each of them and then use if with eval but I want to filter the array without using eval

Tags:

2

Answers


  1. 0

    You can filter the array with an additional check inside, but this requires you to call the functions.

    const func1 = () => {
  return 1
}
const func2 = () => {
  return 1
}
const func3 = () => {
  return 2
}

let arr = [func1, func2, func3]

const uniqueItems = arr.filter((func, index, array) =>
  index === array.findIndex(f => f() === func())
)

console.log(uniqueItems)
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  2. 0

    You could use lodash library (Docs here):

    import _ from 'lodash';

const uniqueValues = _.uniq(arr)
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