Are Set Iterators Mutable or Immutable?
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Description: Portability issues in using the standard library. An article about portability issues in using the Standard Library by Klaus Kreft and Angelika Langer, published in the C/C++ Users Journal.
Are Set Iterators Mutable or Immutable? | Dr Dobb's Are Set Iterators Mutable or Immutable? The C++ Standard mandates that containers such as std::set provide both mutable and immutable iterators. Unfortunately, mutable iterators turn out to be dangerous when used with sets. If you use one to modify an element of a set, you risk corrupting the underlying data structure. Langer and Kreft explain why this is so, and they discuss some of the less-than-desirable solutions - including non-portable implementations of the standard library. The authors then propose a more sensible, and portable, solution using iterator adapters.
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| Page title: | Are Set Iterators Mutable or Immutable? | Dr Dobb's |
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| Description: | The C++ Standard mandates that containers such as std::set provide both mutable and immutable iterators. Unfortunately, mutable iterators turn out to be dangerous when used with sets. If you use one to modify an element of a set, you risk corrupting the underlying data structure. Langer and Kreft explain why this is so, and they discuss some of the less-than-desirable solutions - including non-portable implementations of the standard library. The authors then propose a more sensible, and portable, solution using iterator adapters. |
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| Date | Creation Date: 25-jun-1998 Expiration Date: 24-jun-2014 |