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Results for “Records & reliable control flow”

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JavaRecords & reliable control flow

Define an immutable data record

Java: A local record gives a small Java data carrier named accessors and value semantics.

Java✓ Tested
JavaRecords & reliable control flow

Narrow an object with a pattern variable

Java: Pattern matching avoids a separate cast after a successful instanceof check.

Java✓ Tested
JavaRecords & reliable control flow

Represent a finite set of states

Java: Use an enum to prevent arbitrary strings from representing application states.

Java✓ Tested
JavaRecords & reliable control flow

Return a value from a switch expression

Java: Use an exhaustive switch expression with a fallback for other input values.

Java✓ Tested
JavaRecords & reliable control flow

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
JavaRecords & reliable control flow

Run cleanup after a handled exception

Java: A finally block executes whether the protected operation succeeds or fails.

Java✓ Tested
JavaRecords & reliable control flow

Transform an asynchronous result

Java: Chain thenApply and join a CompletableFuture to retrieve the completed value.

Java✓ Tested
JavaRecords & reliable control flow

Transform an optional value

Java: Use Optional.map and orElse to transform a possibly absent result.

Java✓ Tested
JavaRecords & reliable control flow

Update a shared counter atomically

Java: AtomicInteger provides an indivisible increment operation for a shared counter.

Java✓ Tested
JavaRecords & reliable control flow

Validate a required argument

Java: Use requireNonNull with a useful message at an API boundary.

Java✓ Tested
C#Types & reliable control flow

Create a modified copy of an immutable record

C#: A with expression creates a shallow copy with selected changed properties.

C#✓ Tested
C#Types & reliable control flow

Narrow an object using a type pattern

C#: A successful is pattern introduces a strongly typed local variable.

C#✓ Tested