poor-utils-pro

Appearance

On this page

DuplicateRemovalByAttributes ​

用于检查对象中是否存在重复的属性值，此方法也会检查属性的引用值

isDuplicateByAttributes ​

用于检查是否存在重复的属性值

参数类型 ​

ts
(
  data: { [k : string]: unknown }[],
  IdentityAttr: string,
)

返回值类型 ​

boolean

use example ​

ts
import { isDuplicateByAttributes } from "poor-utils-pro";

// base
const data = [
  { id: 1, name: "a" },
  { id: 2, name: "b" },
  { id: 3, name: "c" },
  { id: 1, name: "d" }
];

isDuplicateByAttributes(data, "id"); // true

// complex
const commonChildren = [{ id: 1, name: "a" }];

const data = [
  { id: 1, name: "a", children: commonChildren },
  { id: 2, name: "b", children: commonChildren },
  { id: 3, name: "c", children: [{ id: 1, name: "a" }] },
  { id: 1, name: "d", children: [{ id: 1, name: "a" }] }
];

isDuplicateByAttributes(data, "children"); // true

duplicateRemovalByAttributes ​

用于去除重复的属性值

参数类型 ​

ts
<T>(
  data: T[],
  IdentityAttr: string,
  callback?: (preNode: T, currentNode: T) => T,
)
  • data: 需要去重的数据
  • IdentityAttr: 去重的属性
  • callback: 去重时的回调函数，用于自定义去重规则

返回值类型 ​

ts
T[]

use example ​

ts
import { duplicateRemovalByAttributes } from "poor-utils-pro";

const data = [
        { id: 1, name: 'a', version: 1 },
        { id: 2, name: 'b', version: 1 },
        { id: 3, name: 'c', version: 1 },
        { id: 1, name: 'd', version: 2 },
      ]

duplicateRemovalByAttributes(data, 'id')

// [
//     { id: 1, name: 'a', version: 1 },
//     { id: 2, name: 'b', version: 1 },
//     { id: 3, name: 'c', version: 1 },
// ]

duplicateRemovalByAttributes(data, 'id', (preNode: Node, nextNode: Node) => {
        return preNode.version > nextNode.version ? preNode : nextNode
}
)

// [
//           { id: 1, name: 'd', version: 2 },
//           { id: 2, name: 'b', version: 1 },
//           { id: 3, name: 'c', version: 1 },
// ]