Tag Archives: stating intentions

More const — fewer bugs

I have just read article “Please declare your variables as const” by Bartłomiej Filipek. It argues that declaring your variables const is beneficial for reasons other than performance. In particular, it can help find bugs in your code. Now, let … Continue reading

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Concealing bugs

Consider the following piece of program code. This program is expected to open file contents.txt, read names from it; then find a desired name, and do something with it. But the program will not do it, because I have a … Continue reading

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Concepts Lite vs enable_if

This post contains quite advanced material. I assume you are already familiar with Concepts Lite. For an overview of what Concepts Lite is, I recommend this proposal. Also, I have found this blog very useful regarding the details of and … Continue reading

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Competing constructors

We start with a known C++ gotcha: In this post I want to analyze the source of the problem a bit further, and offer some suggestions on class design.

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Sessions and object lifetimes

In this post we will see how C++ object lifetime can be used to control the duration of sessions: time spent owing and using a resource. The goal is to get a better understanding of what tools the language offers … Continue reading

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Concepts without Concepts

“Concept” can mean two things in the context of C++ generic libraries: Something informal: something we know about template parameters, and can tell to other human programmers, e.g. in documentation. A language feature. This post is about concepts in the … Continue reading

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Another polymorphism

In this post we will try to see by a practical example what Boost.Variant is for. You can sometimes see examples that use type variant<int, double, string>, but to me they are artificial: I never needed to use something that … Continue reading

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