Results for “Array traversal & selection”
Small, practical examples. Search by task or narrow things down below.
Append to an array signal immutably
Append to an array signal immutably with a standalone Angular component and explicit browser behavior.
Angular✓ Tested
Append to an array without mutating state
Append to an array without mutating state with a small React component and explicit browser behavior.
React✓ Tested
Build a JSON array from rows
Aggregate ordered text values into JSON.
json_group_array✓ Tested
Calculate a fixed array’s element count
Arduino / C: Calculate a fixed array’s element count on an Uno with the Serial Monitor set to 9600 baud.
Arduino / C✓ Tested
Check an array allocation size before multiplying
C: Compare the requested element count against SIZE_MAX divided by element size.
C✓ Tested
Check exact array membership
Bash Scripts: Compare each element literally instead of searching a concatenated string.
Bash Scripts✓ Tested
Collect ordered values into an array
Build a sorted array from query rows.
array_agg✓ Tested
Combine two selections
jQuery: add returns a combined collection in document order.
jQuery✓ Tested
Concatenate arrays without mutating either input
JavaScript: concat creates a shallow combined sequence.
JavaScript✓ Tested
Concatenate arrays without mutating either input
TypeScript: concat creates a shallow combined sequence.
TypeScript✓ Tested
Copy an array independently
Bash Scripts: A new array assignment copies element values rather than creating a shared reference.
Bash Scripts✓ Tested
Count array elements
Bash Scripts: Count array elements with a small standalone Bash program.
Bash Scripts✓ Tested