Results for “GROUP BY”
Small, practical examples. Search by task or narrow things down below.
List files changed by the current commit
Git: diff-tree exposes the paths changed between a commit and its parent.
Git✓ Tested
List files tracked by Git
Git: ls-files reads the index instead of listing every file in the working directory.
Git✓ Tested
Make a script executable by its owner
Linux Commands: Add the owner execute bit without replacing all permission bits.
Linux Commands✓ Tested
Measure the byte length of UTF-8 text
C#: Character count and encoded byte count can differ for non-ASCII text.
C#✓ Tested
Measure UTF-8 bytes separately from characters
Java: Encode a Java string before measuring its serialized byte length.
Java✓ Tested
Merge a branch only by fast-forward
Refuse to create an unexpected merge commit.
merge✓ Tested
Move overlapping bytes safely
C: memmove supports overlapping ranges, unlike memcpy.
C✓ Tested
Pack two small values into one byte
Arduino / C: Mask each four-bit value before combining it.
Arduino / C✓ Tested
Pair corresponding array items by position
JavaScript: Validate equal lengths before zipping when missing counterparts would be an error.
JavaScript✓ Tested
Pair corresponding array items by position
TypeScript: Validate equal lengths before zipping when missing counterparts would be an error.
TypeScript✓ Tested
Partition a collection by a predicate
Java: Use partitioningBy to retain both matching and nonmatching values.
Java✓ Tested
Preserve item state while reordering by key
Preserve item state while reordering by key with a small React component and explicit browser behavior.
React✓ Tested