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useArrayDifference

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256 B
Last Changed
3 hours ago

响应式获取两个数组的差集。

默认情况下,它返回第一个数组相对于第二个数组的差集,即 A \ B相对补集

你可以通过传递 symmetric 选项来获取两个数组的对称差集 A △ B

用法

与响应式数组一起使用

js
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]

与响应式数组一起使用并使用函数比较

js
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 }]

对称差集

这个组合式函数也支持通过传递 symmetric 选项来获取对称差集

js
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

typescript
export interface UseArrayDifferenceOptions {
  /**
   * Returns asymmetric difference
   *
   * @see https://en.wikipedia.org/wiki/Symmetric_difference
   * @default false
   */
  symmetric?: boolean
}
export declare function useArrayDifference<T>(
  list: MaybeRefOrGetter<T[]>,
  values: MaybeRefOrGetter<T[]>,
  key?: keyof T,
  options?: UseArrayDifferenceOptions,
): ComputedRef<T[]>
export declare function useArrayDifference<T>(
  list: MaybeRefOrGetter<T[]>,
  values: MaybeRefOrGetter<T[]>,
  compareFn?: (value: T, othVal: T) => boolean,
  options?: UseArrayDifferenceOptions,
): ComputedRef<T[]>

Source

SourceDocs

Contributors

jorshen

Changelog

No recent changes

Released under the MIT License.