git config global

$ git config --global user.name "John Doe"
$ git config --global user.email [email protected] config --global user.email "[email protected]"git config --global user.name "My Name"git config --listlet sisterCity of cities.controls[i].sisterCities.controls
    <form [formGroup]="form" (ngSubmit)="onSubmit()">
  <div formArrayName="cities">
    <div *ngFor="let city of cities.controls; index as i" [formGroupName]="i">
       <input [formControlName]="name" placeholder="City">
       <div formArrayName="sisterCities"> <!-- this will never work -->
         <div *ngFor="let sisterCity of cities.controls[i]sisterCities.controls; index as j">
           ...
         </div>
       </div>
    </div>
  </div>
  <button>Submit</button>
</form>