How can we efficiently toggle an element in an array using TypeScript?
By toggling, I mean:
- If the element is already present, remove it.
- If the element is not present, add it.
We are looking for a solution that minimizes computational effort.
How can we efficiently toggle an element in an array using TypeScript?
By toggling, I mean:
We are looking for a solution that minimizes computational effort.
Here is a typesafe method that can be used to toggle a value within an array without mutating the original array.
const toggleValue = <T extends unknown>(arr: Array<T>, val: T) => {
const newArr = arr.filter((item) => item !== val)
if (newArr.length === arr.length) return arr.concat(val)
return newArr
}
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