The snippet library.
Small, practical examples. Search by task or narrow things down below.
Build a URL query string
Python: Use urlencode to percent-encode query parameter values correctly.
Python✓ Tested
Build a URL query string from values
JavaScript: URLSearchParams handles query escaping and repeated parameter appends.
JavaScript✓ Tested
Build a URL query string from values
TypeScript: URLSearchParams handles query escaping and repeated parameter appends.
TypeScript✓ Tested
Build an image with a default command
Docker / Compose: Build an image with a default command with a complete introductory Dockerfile.
Docker / Compose✓ Tested
Build an object from key-value entries
JavaScript: Object.fromEntries converts an iterable of pairs into ordinary own properties.
JavaScript✓ Tested
Build an object from key-value entries
TypeScript: Object.fromEntries converts an iterable of pairs into ordinary own properties.
TypeScript✓ Tested
Build text efficiently in a loop
Java: Append to StringBuilder when constructing a string incrementally.
Java✓ Tested
Build text incrementally
Build text incrementally using a complete Go program with explicit sample inputs.
Go✓ Tested
Build text incrementally with StringBuilder
C#: Append fragments instead of repeatedly concatenating intermediate strings in a loop.
C#✓ Tested
Cache repeated pure function calls
Python: Use lru_cache to avoid recomputing results for identical hashable arguments.
Python✓ Tested
Calculate a CRC-8 over a byte sequence
Arduino / C: This implementation uses polynomial 0x07, initial zero, and no reflection.
Arduino / C✓ Tested
Calculate a cumulative integer percentage
SQL: Divide a running window sum by the complete total using a unique ordering key.
SQL✓ Tested