Null.md

Pattern: Use of null

Issue: -

Description

Scala discourages use of null, preferring Option.

Note, for performance sensitive code, prefer null over Option, in order to avoid virtual method calls and boxing. Label the nullable fields clearly with Nullable.

Parameters

Name	Description	Type	Default Value
allowNullChecks	Allow null checks	boolean	true

Example configuration

<check enabled="true" class="org.scalastyle.scalariform.NullChecker" level="warning">
 <parameters>
  <parameter name="allowNullChecks">true</parameter>
 </parameters>
</check>

Further Reading

• Scalastyle - Null