Results for “records”
Small, practical examples. Search by task or narrow things down below.
Represent a finite set of states
Java: Use an enum to prevent arbitrary strings from representing application states.
Java✓ Tested
Return a value from a switch expression
Java: Use an exhaustive switch expression with a fallback for other input values.
Java✓ Tested
Run a task on an executor and close it
Java: Java 21 ExecutorService supports try-with-resources to shut down after submitted work.
Java✓ Tested
Run cleanup after a handled exception
Java: A finally block executes whether the protected operation succeeds or fails.
Java✓ Tested
Sort lines by numeric value
Linux Commands: Use sort -n so 10 sorts after 2 instead of before it.
Linux Commands✓ Tested
Sort values in descending order
Linux Commands: Combine numeric sorting with reverse order.
Linux Commands✓ Tested
Sort version-like labels naturally
Linux Commands: Use GNU version sort to compare embedded digit runs numerically.
Linux Commands✓ Tested
Transform an asynchronous result
Java: Chain thenApply and join a CompletableFuture to retrieve the completed value.
Java✓ Tested
Transform an optional value
Java: Use Optional.map and orElse to transform a possibly absent result.
Java✓ Tested
Update a shared counter atomically
Java: AtomicInteger provides an indivisible increment operation for a shared counter.
Java✓ Tested
Use a fallback for a missing hashtable entry
PowerShell: Test the key explicitly so legitimate false or zero values are preserved.
PowerShell✓ Tested
Validate a required argument
Java: Use requireNonNull with a useful message at an API boundary.
Java✓ Tested