So I’m getting a segmentation fault error in the beginning of the code. I’ve tried running some tests at the different points and the error seems to be when i allocate memory for the array. Ive just started learning about heap and stack memory so I’m not really sure if I’m doing something wrong there. … Read more
It declares an rvalue reference (standards proposal doc). Here’s an introduction to rvalue references. Here’s a fantastic in-depth look at rvalue references by one of Microsoft’s standard library developers. CAUTION: the linked article on MSDN (“Rvalue References: C++0x Features in VC10, Part 2”) is a very clear introduction to Rvalue references, but makes statements about Rvalue references that were once … Read more
It is basically a header file that also includes every standard library and STL include file. The only purpose I can see for it would be for testing and education. Se e.g. GCC 4.8.0 /bits/stdc++.h source. Using it would include a lot of unnecessary stuff and increases compilation time. Edit: As Neil says, it’s an implementation for … Read more
How to create timer events using C++ 11? I need something like: “Call me after 1 second from now”. Is there any library?
Here is a (maybe less verbose) way to split string (based on the post you mentioned).
Basic meaning and syntax Both keywords can be used in the declaration of objects as well as functions. The basic difference when applied to objects is this: const declares an object as constant. This implies a guarantee that once initialized, the value of that object won’t change, and the compiler can make use of this … Read more
How is it a keyword and an instance of a type? This isn’t surprising. Both true and false are keywords and as literals they have a type ( bool ). nullptr is a pointer literal of type std::nullptr_t, and it’s a prvalue (you cannot take the address of it using &). 4.10 about pointer conversion says that a prvalue of type std::nullptr_t is a null pointer constant, and that an … Read more
std::function is a type erasure object. That means it erases the details of how some operations happen, and provides a uniform run time interface to them. For std::function, the primary1 operations are copy/move, destruction, and ‘invocation’ with operator() — the ‘function like call operator’. In less abstruse English, it means that std::function can contain almost any object that acts like a function … Read more
There is statement that the compiler can’t pass. I can’t understand it. Can anyone tell me in detail or How to fix it ? Best wishes to you. The statement as follow: The compiler given the information as follow: The std::priority_queue inducted in cppreference site:http://en.cppreference.com/w/cpp/container/priority_queue mainly structure as follow:
Deleting a function is a C++11 feature: The common idiom of “prohibiting copying” can now be expressed directly: […] The “delete” mechanism can be used for any function. For example, we can eliminate an undesired conversion like this: