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ConfusingTernary

ConfusingTernary

Avoid negation within an “if” expression with an “else” clause. For example, rephrase:

if (x != y) diff(); else same(); as: if (x == y) same(); else diff();

Most “if (x != y)” cases without an “else” are often return cases, so consistent use of this rule makes the code easier to read. Also, this resolves trivial ordering problems, such as “does the error case go first?” or “does the common case go first?”.

This rule is defined by the following Java class: net.sourceforge.pmd.lang.java.rule.design.ConfusingTernaryRule

Example(s):

          
boolean bar(int x, int y) {
  return (x != y) ? diff : same;
 }
          




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