Results for “Array transformations”
Small, practical examples. Search by task or narrow things down below.
Expand an array into rows
Use WITH ORDINALITY to retain original element order.
unnest✓ Tested
Filter and transform an array
Keep active objects and extract their names.
filter✓ Tested
Find an array element
Use a bounded linear search over a C array.
C✓ Tested
Find the first matching array item
JavaScript: find returns undefined when no item satisfies the predicate.
JavaScript✓ Tested
Find the first matching array item
TypeScript: find returns undefined when no item satisfies the predicate.
TypeScript✓ Tested
Find the index of an array item
PowerShell: Array.IndexOf returns -1 when the requested item is absent.
PowerShell✓ Tested
Find the largest array value
Track the maximum in a nonempty C integer array.
C✓ Tested
Iterate over a fixed array of records
C: Compute the array element count with sizeof at the point where it is still an array.
C✓ Tested
Iterate with array indices and values
JavaScript: entries provides each position and value without a separate counter.
JavaScript✓ Tested
Iterate with array indices and values
TypeScript: entries provides each position and value without a separate counter.
TypeScript✓ Tested
Join an array into text
PowerShell: Join an array into text using PowerShell 7.
PowerShell✓ Tested
Join array items with a one-character separator
Bash Scripts: A local IFS controls the separator used by the quoted star expansion.
Bash Scripts✓ Tested