How to execute function first in combineLatest?

Question

Angular

There are observable variables, they are combined in combineLatest. You need to execute the third-party observable function on the thread before the switchMap is executed.

Start With fails with error TypeError: undefined is not iterable (cannot read property Symbol(Symbol.iterator)

)

combineLatest([var1, var2]).pipe(
      startWith(this.func),
      switchMap(([var1, var2) => this.getCurrent(var1, var2)
    )

Answer 1

tap