Results for “Array transformations”
Small, practical examples. Search by task or narrow things down below.
Locate a value in a sorted array
Java: Use Arrays.binarySearch only after establishing ascending order.
Java✓ Tested
Look up values in an associative array
Use named keys for a small in-memory configuration table.
dictionary✓ Tested
Loop over an array safely
Preserve spaces in array elements while iterating.
array✓ Tested
Pair corresponding array items by position
JavaScript: Validate equal lengths before zipping when missing counterparts would be an error.
JavaScript✓ Tested
Pair corresponding array items by position
TypeScript: Validate equal lengths before zipping when missing counterparts would be an error.
TypeScript✓ Tested
Pair corresponding values from two arrays
PowerShell: Check lengths before indexing to reject mismatched input collections.
PowerShell✓ Tested
Prepend items while preserving existing array values
Bash Scripts: Construct a new array with the new values before the quoted original expansion.
Bash Scripts✓ Tested
Process every array element
PowerShell: Process every array element using PowerShell 7.
PowerShell✓ Tested
Read an optional associative-array entry
Bash Scripts: Use a fallback expansion when a map key may not be present under nounset.
Bash Scripts✓ Tested
Read complete lines into an array
Bash Scripts: Mapfile with -t removes each line terminator but preserves other whitespace.
Bash Scripts✓ Tested
Read null-delimited filenames into an array
Bash Scripts: A null delimiter preserves spaces and embedded newlines in filenames.
Bash Scripts✓ Tested
Read the final array item with a negative index
JavaScript: at supports negative positions counted from the end.
JavaScript✓ Tested