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## Consistency

- Bad example: `String` class

      s.equals(t) / s.equalsIgnoreCase(t)

- But

      boolean regionMatches(int toffset,
         String other, int ooffset, int len)
      boolean regionMatches(boolean ignoreCase, int toffset,
         String other, int ooffset, int len)

- Why not `regionMatchesIgnoreCase`?
- Very common problem in student code

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