Results for “File operations & archives”
Small, practical examples. Search by task or narrow things down below.
Check whether a range is already sorted
C++: is_sorted reports ordering without modifying the input.
C++✓ Tested
Choose Bash with pipefail for build commands
Docker / Compose: SHELL changes the interpreter for subsequent shell-form instructions.
Docker / Compose✓ Tested
Combine a stable entrypoint with default arguments
Docker / Compose: CMD supplies default arguments to an exec-form ENTRYPOINT.
Docker / Compose✓ 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