Which programming languages support constant methods?

Posted by Derek Mahar on Stack Overflow See other posts from Stack Overflow or by Derek Mahar
Published on 2010-03-23T17:39:34Z Indexed on 2010/03/23 17:53 UTC
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Which programming languages other than C++ support the concept of a constant class method? That is, what languages allow the programmer to constrain a method in such a way that it is guaranteed not to change the state of an object to which the method is applied?

Please provide examples or references in your answer.

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