Results for “Array transformations”
Small, practical examples. Search by task or narrow things down below.
Use named states for a controller
Arduino / C: An enum makes state transitions easier to read than unexplained numbers.
Arduino / C✓ Tested
Check JSONB containment
Test whether an object contains a key-value pair.
jsonb✓ Tested
Count matching values
Count even numbers in a fixed C array.
C✓ Tested
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
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