C++ codes, algorithms, problems, etc

Problems, tasks, algorithms or new things which I solved, learned or implemented, reimplemented or refactored

• algorithms
• basics
• benchmarks
• concurrency
• cryptography
• data_serialization
• data_structures
• databases
• datetime
• design_patterns
• language_features
• linux_programming
• math_problems
• practice_problems
• snippets
• stream_and_filesystems
• string_and_regular_expression
• unit_tests