Based on our record, Code Arcade should be more popular than Frontloops. It has been mentiond 4 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
You can practice your code solving skills here: Https://app.codesignal.com/arcade Https://leetcode.com/problemset/all/. Source: 12 months ago
CodeSignal's Arcade (signup required) has a lot of practice problems at different levels that can help break you out of the mindset of copying tutorial code. Source: about 2 years ago
I like the Databases section of CodeSignal Arcade. Problems increase in difficulty, plus I've found it's the platform a lot of companies use for SQL assessment so you'll get a good sense of the type of questions to expect. Source: about 2 years ago
Codesignal has a good set of SQL questions. Not sure they "support" Postgres, but there's 84 free levels under the Arcade section. https://app.codesignal.com/arcade. Source: over 2 years ago
Building projects and solving challenges is a great way to help you understand concepts that you will be learning and discover new things that you may want to pursue such as learning a frontend framework or exploring Canvas and WebGL. You can get project challenges from places like Frontend Mentor, CodePen Challenges, or Frontloops. - Source: dev.to / 12 months ago
CodinGame - CodinGame provides users with a fun and effective way to learn coding that eschews the rigid structure of traditional teaching methods.
Frontend Mentor - Supercharge your front-end skills by building in a real-life workflow. Solve real-world HTML, CSS and JavaScript challenges whilst working to professional quality designs.
hackattic - No nonsense, real world programming challenges
Daily Coding Problem - Get exceptionally good at coding interviews
Good Code - Free front end coding challenges
Real Dev - Real-life coding skill challenge