Angular - Convert a Observable to a number

Question

I\'m using ngrx store to record state, my state currently holds my list of accounts and the current page (for paging).

On my list of accounts component i call the st

Answer 1

subscribe to get result as number:

let currentPageSub :Subscription;
...
this.currentPageSub = this.store.select(getCurrentPage).subscribe(
 (page: number) => {
     this.currentPage$=page;
 }
);