Results for “Array traversal & selection”
Small, practical examples. Search by task or narrow things down below.
Filter even numbers
Create a JavaScript array containing only even values.
JavaScript✓ Tested
Group records into map entries
JavaScript: Initialize an array for a missing Map key before appending its values.
JavaScript✓ Tested
Group records into map entries
TypeScript: Initialize an array for a missing Map key before appending its values.
TypeScript✓ Tested
Handle a filename pattern with no matches
Use nullglob so an unmatched pattern produces an empty array.
nullglob✓ Tested
Label a volume with its purpose
Docker / Compose: Volume labels support explicit ownership and selection.
Docker / Compose✓ Tested
Pass values through a custom event
jQuery: trigger passes its extra argument array after the event object.
jQuery✓ Tested
Produce a lazy sequence with a generator
JavaScript: A generator yields one value per iteration without building an intermediate array.
JavaScript✓ Tested
Produce a lazy sequence with a generator
TypeScript: A generator yields one value per iteration without building an intermediate array.
TypeScript✓ Tested
Read a JSONB field as text
Extract a nested value from a JSON document.
jsonb✓ Tested
Read a scalar JSON property
Extract a named value using a JSON path.
JSON_VALUE✓ Tested
Read and total a flash lookup table
Arduino / C: Array size can be computed at compile time even for a flash-resident table.
Arduino / C✓ Tested
Read one JSON document per line
Python: Parse nonempty JSON Lines records independently instead of loading a JSON array.
Python✓ Tested