Results for “Array operations”
Small, practical examples. Search by task or narrow things down below.
Check whether every item matches
TypeScript: every stops at the first failed predicate and returns true for an empty array.
TypeScript✓ Tested
Clean up a temporary directory automatically
Python: Use TemporaryDirectory as a context manager so cleanup also happens after exceptions.
Python✓ Tested
Collect repeated form field names
jQuery: serializeArray preserves multiple values as name-value records.
jQuery✓ Tested
Combine results while retaining duplicates
SQL: UNION ALL does not spend work removing equal rows.
SQL✓ Tested
Combine results while retaining duplicates
SQL Server: UNION ALL does not spend work removing equal rows.
SQL Server✓ Tested
Combine results while retaining duplicates
Postgres: UNION ALL does not spend work removing equal rows.
Postgres✓ Tested
Combine results while retaining duplicates
SQLite: UNION ALL does not spend work removing equal rows.
SQLite✓ Tested
Compute a simple XOR checksum
C: XOR all payload bytes into one byte to demonstrate a basic error-detection field.
C✓ Tested
Construct a date from Unix seconds
JavaScript: Multiply seconds by 1000 before creating a Date.
JavaScript✓ Tested
Construct a date from Unix seconds
TypeScript: Multiply seconds by 1000 before creating a Date.
TypeScript✓ Tested
Convert epoch milliseconds to whole seconds
JavaScript: JavaScript Date stores milliseconds while many APIs use Unix seconds.
JavaScript✓ Tested
Convert epoch milliseconds to whole seconds
TypeScript: JavaScript Date stores milliseconds while many APIs use Unix seconds.
TypeScript✓ Tested