I just found out that orand andare defined for QuerySet. This means that to do queries union or intersection, you can do:
User.objects.filter(...) | User.objects.filter(...)
User.objects.filter(...) & User.objects.filter(...)Subscribe for the news and updates
In the previous article, we learned about test analysis for a product in general, and now we are ready to go further and look at test analysis for specific features.
One of the key requirements for modern UI is being performant. No matter how beautiful your app looks and what killer features it offers, it will frustrate your users if it clangs.
SQL is a fairly complicated language with a steep learning curve. For a large number of people who make use of SQL, learning to apply it efficiently takes lots of trials and errors. Here are some tips on how you can make your SELECT queries better. The majority of tips should be applicable to any relational database management system, but the terminology and exact namings will be taken from PostgreSQL.
In this article we'll discuss some tricks you can use with Angular to make routing cleaner and improve SEO of your application.
In this article we will write a small library for pulling metadata and creating a preview for a site just like Slack does.
Quite often we have to write paginated or filtered blocks of information on page. I created a decorator that would automate this process.