SQL/JSON in PostgreSQL 12 – the best of both worlds?
PostgreSQL 12, released October 3rd 2019, offers the SQL/JSON Path Language – a way to query and filter data in JSON objects not too dissimilar to how XPath queries XML.
Custom Validators for Angular Reactive Forms
Angular Reactive Forms are actually pretty cool and once you get the hang of them, you can appreciate all of the form dynamics that Angular handles for you.