November 2024
Intermediate to advanced
300 pages
7h 12m
English
Content preview from Pragmatic Unit Testing in Java with JUnit, 3rd EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Removing Temporaries of Little Value
Temporary variables (“temps”) have a number of uses. They can cache the value of an expensive computation or collect things that change throughout the body of a method. A temp can also clarify the intent of code—a valid choice even if it’s used only once.
In matches, the answer local variable provides none of those three benefits. You can inline such a pointless variable by replacing any occurrences of it with the answerMatching(criterion) expression. In IntelliJ IDEA, inline a variable by following these steps:
- Click its name.
- Open the context menu (via right-click).
- Select Refactor ▶ Inline Variable from the menu.
Any references to the variable are replaced with the right-hand side of the assignment. The ...
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