Release Notes

Use the Safe Navigation Operator to Avoid Null Pointer Exceptions
Use the safe navigation operator (?.) to replace explicit, sequential checks for null references. This new operator short-circuits expressions that attempt to operate on a null value and returns null instead of throwing a NullPointerException.

Update Resources with the PATCH HTTP Method in Apex Callouts
To make partial or full updates to a resource in an HTTP web service, specify the PATCH method in the HttpRequest class. Previously, only the PUT method was supported for full updates.

Send Custom Notifications from Apex
Use the Messaging.CustomNotification class to create, configure, and send custom notifications directly from Apex code, such as a trigger.

Detect Apex Runtime Context with RequestId and Quiddity
You can now detect Apex context at runtime and correlate multiple logs triggered by the request, using Request ID and Quiddity values. Use the methods in the System.Request class to obtain the Request ID and Quiddity of the current Salesforce request.

Improve Apex Testing with New SObject Error Methods
Track errors with the new SObject.hasErrors() and SObject.getErrors() methods without performing a DML operation to check the result for errors. Dynamically add errors to specific fields with new SObject.addError() overload methods. Use the hasErrors() method to know if an SObject instance contains errors. Use the getErrors() method to retrieve the list of errors for a specific SObject instance.

Delete up to 50,000 Big Object Records in a Batch
The Database.deleteImmediate() method now supports batch deletes of up to 50,000 big object records at once. This new limit matches the total number of records you can retrieve with a SOQL query.

Enhanced Support for @namespaceAccessible Annotation
The @namespaceAccessible annotation provides enhanced support for accessing interfaces, properties, and abstract classes in second-generation packages.

Apex

See Also