Could not find the archives to search ... I have tried Forkjoin, chained 
observables and using Async/await but this is not working the way I need 
it. I know I have to think differently with Angular 2+ and I may get there 
but for now I need to process an HTTP call sequentially, wait until the 
observable is back and then continue but all the things I tried were close 
but no cigar, even using promises.

I have a method that inserts rows if validation (in another method) passes, 
I do an HTTP call to find out if the row id already exists and if 
everything is good returns to the caller and inserts a row... What should I 
be looking at? Any help would be greatly appreciated.


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