Results for “Bulk changes & set operations”
Small, practical examples. Search by task or narrow things down below.
Inspect a file length without reading it
C#: Use FileInfo.Length to retrieve a logical size in bytes.
C#✓ Tested
Inspect both successful and failed promise results
JavaScript: allSettled preserves input order and reports failures without rejecting the combined promise.
JavaScript✓ Tested
Inspect both successful and failed promise results
TypeScript: allSettled preserves input order and reports failures without rejecting the combined promise.
TypeScript✓ Tested
Invert a dictionary with unique values
Python: Swap keys and values when the values are hashable and unique.
Python✓ Tested
Iterate over keys in sorted order
Iterate over keys in sorted order in a complete Rust program using the standard library.
Rust✓ Tested
Join array items with a one-character separator
Bash Scripts: A local IFS controls the separator used by the quoted star expansion.
Bash Scripts✓ Tested
Keep children while clearing a deleted relationship
SQL: ON DELETE SET NULL requires a nullable foreign-key column.
SQL✓ Tested
Keep children while clearing a deleted relationship
SQL Server: ON DELETE SET NULL requires a nullable foreign-key column.
SQL Server✓ Tested
Keep children while clearing a deleted relationship
Postgres: ON DELETE SET NULL requires a nullable foreign-key column.
Postgres✓ Tested
Keep children while clearing a deleted relationship
SQLite: ON DELETE SET NULL requires a nullable foreign-key column.
SQLite✓ Tested
Keep only the most recent items
Python: Use a bounded deque to discard the oldest item as new values arrive.
Python✓ Tested
List regular files recursively in sorted order
C++: Collect relative paths before sorting because directory iteration order is unspecified.
C++✓ Tested