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Tag Archives: destructors
The obvious final step
The title may be misleading, as I had to invent a new short term for the pattern that occurs in the code once in a while. Example first: During the construction of an XML file when you write an element, … Continue reading
Operation cancelling and std::fstream
In the previous post we have sketched out the view that error handling is about expressing the success dependency between operations. I have also indicated the guideline “destructors only for releasing resources”. In this post we are going to see … Continue reading
Posted in programming
Tagged correctness, destructors, exception handling, resource handling
11 Comments
Handling errors is canceling operations
I actually covered this topic before, in this post, but given my recent experience I feel it needs reiterating and a bit of restructuring. It boils down to the observation that any error handling I have encountered — be it … Continue reading
Posted in programming
Tagged correctness, destructors, exception handling, resource handling
7 Comments
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
Destructors — 2 use cases
In this post I want to describe an interesting observation: programmers generally use destructors for two purposes. One is fairly obvious: releasing resources; the other — not necessarily so.
noexcept destructors
The goal of this post is to show one — fairly small — backwards incompatibility in C++11. It shows how noexcept exception specifications are implicitly generated for your destructors. In short, the following program used to run successfully in C++03 … Continue reading
C++’s best feature
Update. My remark on exceptional life-time of temporaries in array initialization was incorrect. This part is now fixed. I also included some essential information, as suggested by Herb Sutter. C++, if you want to learn all of it, is big, … Continue reading
Destructors that throw
Have you already heard that your destructors had better not throw exceptions? You probably did, because this is what nearly every C++ programmer is taught. But because it is so obvious, it may have escaped your notice that C++, and … Continue reading
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