Learn programming with code examples for and SQL. Explore topics like substring extraction, array merging, and database queries. Study SQL joins, sorting grouped data, and data types. Access ready-to-use code from books and trusted online sources.
by Fedor Obraztsov★ 4.794 ratingsDeveloper ToolsFreeData updated 2026-09-15
Access -English translations with 930,000 entries and phrases. Search for words, phrases, and translations. Include examples and grammar notes. Save favorites and create custom lists. Sync across devices.
Learn with 200 structured topics and 3000 annotated audio examples. Practice sentence structure and pronunciation. Track progress and review exercises for accuracy and retention.
Access and navigate data protection laws and regulations from various countries. Search for specific legislation, view detailed sections, and bookmark relevant content for future reference.
Access terms, , and tables organized by category. Each formula includes a description and variable definitions. Prepare for tests or Olympiads by studying theory, terms, and calculations.
Write and execute on mobile devices. Debug programs in real-time. Access a library of sample and tutorials. Save and share projects. Integrate with cloud storage for backups. Run legacy programs and explore retro programming features.
With tutorials on PHP, Node.js, Python, Ruby on Rails, ASP.NET, Django, and Flask. Follow step-by-step guides to build websites and web apps. Access code examples and practice exercises to reinforce concepts.
Write and save JavaScript code as .js files. Execute scripts directly on the device without network access. Use syntax highlighting and a JavaScript console for testing and debugging.
Learn words with flashcards that include example sentences, images, and audio for correct pronunciation. Practice vocabulary through interactive quizzes and review sessions. Share with others for collaborative study.