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2.3 KiB
2.3 KiB
category
| category |
|---|
| Array |
useArrayDifference
Reactive get array difference of two arrays.
By default, it returns the difference of the first array from the second array, so call A \ B, Relative Complement of B in A.
You can pass the symmetric option to get the Symmetric difference of two arrays A △ B.
Usage
Use with reactive array
import { useArrayDifference } from '@vueuse/core'
const list1 = ref([0, 1, 2, 3, 4, 5])
const list2 = ref([4, 5, 6])
const result = useArrayDifference(list1, list2)
// result.value: [0, 1, 2, 3]
list2.value = [0, 1, 2]
// result.value: [3, 4, 5]
Use with reactive array and use function comparison
import { useArrayDifference } from '@vueuse/core'
const list1 = ref([{ id: 1 }, { id: 2 }, { id: 3 }, { id: 4 }, { id: 5 }])
const list2 = ref([{ id: 4 }, { id: 5 }, { id: 6 }])
const result = useArrayDifference(list1, list2, (value, othVal) => value.id === othVal.id)
// result.value: [{ id: 1 }, { id: 2 }, { id: 3 }]
Symmetric Difference
This composable also supports Symmetric difference by passing the symmetric option.
import { useArrayDifference } from '@vueuse/core'
const list1 = ref([{ id: 1 }, { id: 2 }, { id: 3 }, { id: 4 }, { id: 5 }])
const list2 = ref([{ id: 4 }, { id: 5 }, { id: 6 }])
const result = useArrayDifference(
list1,
list2,
(value, othVal) => value.id === othVal.id,
{ symmetric: true }
)
// result.value: [{ id: 1 }, { id: 2 }, { id: 3 }, { id: 6 }]
Type Declarations
export interface UseArrayDifferenceOptions {
/**
* Returns asymmetric difference
*
* @see https://en.wikipedia.org/wiki/Symmetric_difference
* @default false
*/
symmetric?: boolean
}
export type UseArrayDifferenceReturn<T = any> = ComputedRef<T[]>
export declare function useArrayDifference<T>(
list: MaybeRefOrGetter<T[]>,
values: MaybeRefOrGetter<T[]>,
key?: keyof T,
options?: UseArrayDifferenceOptions,
): UseArrayDifferenceReturn<T>
export declare function useArrayDifference<T>(
list: MaybeRefOrGetter<T[]>,
values: MaybeRefOrGetter<T[]>,
compareFn?: (value: T, othVal: T) => boolean,
options?: UseArrayDifferenceOptions,
): UseArrayDifferenceReturn<T>