Results for “Hashtables & object records”
Small, practical examples. Search by task or narrow things down below.
Read a nested value safely
Combine optional chaining with nullish coalescing in JavaScript.
JavaScript✓ Tested
Read a property with keyof
Keep the key and returned value tied to an object type.
keyof✓ Tested
Read a scalar JSON property
Extract a named value using a JSON path.
JSON_VALUE✓ Tested
Read one JSON document per line
Python: Parse nonempty JSON Lines records independently instead of loading a JSON array.
Python✓ Tested
Read rows from CSV text
Parse CSV into objects with named properties.
CSV✓ Tested
Remove duplicate values with a Set
Keep the first occurrence order while deduplicating.
Set✓ Tested
Replace a token inside an Arduino String
Arduino / C: replace modifies all occurrences in the existing object.
Arduino / C✓ Tested
Replace the URL of a configured remote
Git: set-url changes configuration without fetching or pushing any objects.
Git✓ Tested
Run cleanup through a scoped destructor
C++: A stack object’s destructor runs when its scope exits, including normal exception unwinding.
C++✓ Tested
Select fields with the Pick utility type
Expose a smaller view of a larger object type.
Pick✓ Tested
Serialize a hashtable as JSON
Produce compact JSON for a small data object.
JSON✓ Tested
Set and inspect a fractional CPU limit
Docker / Compose: The cpus option records a limit in units of one billion NanoCPUs.
Docker / Compose✓ Tested