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What happens if you call erase() on a map element while iterating from begin to end?
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C++11
This has been fixed in C++11 (or erase has been improved/made consistent across all container types).
The erase method now returns the next iterator.
auto pm_it = port_map.begin();
while(pm_it != port_map.end())
{
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What is a Windows Handle?
...tion subsystem cannot just invalidate pointers at will. Otherwise no C or C++ program could ever be provably correct; worse any program of sufficient complexity would be demonstrably incorrect by definition. Besides, double indirection does not help if the memory directly pointed to is moved aroun...
What is the significance of initializing direction arrays below with given values when developing ch
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How to cast int to enum in C++?
How do I cast an int to an enum in C++?
5 Answers
5
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How do I compile a Visual Studio project from the command-line?
...ting the checkout, build, distribution, test, and commit cycle for a large C++ solution that is using Monotone , CMake , Visual Studio Express 2008, and custom tests.
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Correct idiom for managing multiple chained resources in try-with-resources block?
...bw.write(text);
}
For me, the best thing coming to Java from traditional C++ 15 years ago was that you could trust your program. Even if things are in the muck and going wrong, which they often do, I want the rest of the code to be on best behaviour and smelling of roses. Indeed, the BufferedWrite...
Should “node_modules” folder be included in the git repository
...choice because some NodeJS modules, like MongoDB NodeJS driver, use NodeJS C++ add-ons. These add-ons are compiled when running npm install command. So when you track node_modules directory, you may accidentally commit an OS specific binary file.
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How to check if std::map contains a key without doing insert?
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Your desideratum,map.contains(key), is scheduled for the draft standard C++2a. In 2017 it was implemented by gcc 9.2. It's also in the current clang.
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What is the fastest way to get the value of π?
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In the interests of completeness, a C++ template version, which, for an optimised build, will compute an approximation of PI at compile time, and will inline to a single value.
#include <iostream>
template<int I>
struct sign
{
enum {value = (I...
How is TeamViewer so fast?
...wyse, YMMV.
Also the choice of a JIT compiled runtime over something like C++ might take a slice from your performance edge, especially in memory constrained machines (a lot of performance tuning goes to the toilet when windows start using the pagefile intensively). And you will need memory to keep...