/TypeScript/Append to array mongoose updateone

Append to array mongoose updateone

/*Another way to push items into array using Mongoose is-
  $addToSet, if you want only unique items to be pushed into 
  array. $push operator simply adds the object to array whether
  or not the object is already present, while $addToSet does that
  only if the object is not present in the array so as not to
  incorporate duplicacy.*/

PersonModel.update(
  { _id: person._id }, 
  { $addToSet: { friends: friend } }
);

Source: stackoverflow.com

Similar codes

0 vote269 views1 answer
Call reactdom.render with 2 arguments example
TypeScript
4 votes297 views4 answers
Array.prototype.map() expects a return value from arrow function array-callback-return
TypeScript
18 votes251 views3 answers
Enum to number typescript
TypeScript
0 vote244 views2 answers
Check if value exisits update or insert sQL
TypeScript
1 vote275 views1 answer
@angular/fire/angularfire2.d.ts:37:49 - error TS2344: Type 'T[K]' does not satisfy the constraint '(...args: any) => any
TypeScript
6 votes256 views1 answer
Timeout typescript
TypeScript
24 votes267 views4 answers
Children type typescript react'
TypeScript
0 vote261 views1 answer
Typescript isvalidguid
TypeScript
10 votes259 views3 answers
Addeventlistener with arguments in angular 8
TypeScript
1 vote298 views2 answers
Ffmpeg batch convert ts to mp4 files in a folder
TypeScript