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Mini website for testing both general CS knowledge and enforce coding
...They are designed for spaced-repetition style study so you can cycle frequently through fundamentals until recall feels automatic. Many cards point at canonical definitions or contrasts (e.g., stack vs. queue, BFS vs. DFS) to strengthen conceptual boundaries. The material favors clarity and breadth over exhaustive proofs, making it ideal for quick refreshers during a study plan. It complements longer resources by giving you a lightweight way to keep key concepts top of mind.
xContract is suite of per-language libraries that provide facilities for defining and enforcing software contracts. Intended to be used, where desired, in release modes/builds, xContract emphasises efficiency in addition to clarity and succinctness.