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
Promise is a powerful tool in asynchronous programming that allows developers to call a time-consuming function and proceed with program execution without waiting for the function result.
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.
Once we received an interesting task from a client. They needed to allow their users to upload a 3D model of the building and show it in a timelapse video from the construction site.
Now it's time to get acquainted with Elasticsearch. This NoSQL database is used to store logs, analyze information and - most importantly - search.
We often handling API server updates including backwards-incompatible changes when upgrading web applications. At the same time we update the client part, therefore, we did not experience any particular difficulties.
When we use css-sprites it's important to make browser cache them for longest period possible. On other hand, we need to refresh them when they are updated. This is especially visible when all icons are stored in single sprite. When it's outdated - entire site becomes ugly.