Unique In List With Predicate

Creates a duplicate-free version of a list, in which only the first occurrence of each element is kept, compared by predicate

Description

Creates a duplicate-free version of a list, in which only the first occurrence of each element is kept. The order of result values is determined by the order they occur in the list.

Example:

• inputs

  • source = [{ "user": "barney", "age": 36, "active": true },

  { "user": "fred", "age": 40, "active": false },

  { "user": "pebbles", "age": 24, "active": true },

  { "user": "travis", "age": 24, "active": true }]

  • comparator = (objectA, objectB) => objectA.age === objectB.age

• outputs

  • result = [{ "user": "barney", "age": 36, "active": true },

  { "user": "fred", "age": 40, "active": false },

  { "user": "pebbles", "age": 24, "active": true }]

Inputs

• Source (Object): The collection to inspect. Could be in the form of List, Array and QueryResult
• Comparator (Boolean Comparator): The predicate function that compares the two objects from the list.
  Inputs:
  - Object A: The left item of the list.
  - Object B: The right item of the list .
  Outputs:
  - result (Boolean): Set it to true if objects are equal. The left object will be included in the result.

Outputs

• Error Flow (Error Flow): Triggered by providing unexpected type of the source.
• Result (Object): The new duplicate free list