Compile the program with: as cout is present in the C++ standard library, which would need explicit linking with -lstdc++ when using gcc; g++ links the standard library by default. With gcc, (g++ should be preferred over gcc)
In addition to what visitor said : The function void emplace_back(Type&& _Val) provided by MSCV10 is non conforming and redundant, because as you noted it is strictly equivalent to push_back(Type&& _Val). But the real C++0x form of emplace_back is really useful: void emplace_back(Args&&…); Instead of taking a value_type it takes a variadic list of arguments, so that means that you can now perfectly … Read more
If you use std::array instead of a built-in array (which you should), it becomes very simple. Copying an array is then the same as copying any other object.
It looks to me as if this is due to a typo, and you should use the variable ‘j’ in the second loop. After the first loop, the variable ‘i’ contains the value 52, so it sounds expected that calling nums.at(i) would throw a std::out_of_range, since nums only contains 52 values, starting at index 0. … Read more
I have an issue with std::stol. All answers I have found regarding to issues with std::stol or std::stoi are dealing with C++11 compiling / building. When I use std::stol() I get the following error: Any ideas? Building with gcc -std::C++11 works fine. Note: I think this is my first C++11 expression I use.
You’re close. Note that you can define it inside the for loop: And if you are using C++11 then you can use a range-based for loop instead: Here auto automatically deduces the correct type. You could have written Student const& i instead.
Each instantiation and full specialization of std::atomic<> represents a type that different threads can simultaneously operate on (their instances), without raising undefined behavior: Objects of atomic types are the only C++ objects that are free from data races; that is, if one thread writes to an atomic object while another thread reads from it, the behavior is … Read more
stoi function crashes program with the error message and I can’t figure out why, there is a instance being passed into the function but still returning an error. Can someone please help me out with a solution maybe?
Flags (or compiler options) are nothing but ordinary command line arguments passed to the compiler executable. Assuming you are invoking g++ from the command line (terminal): $ g++ -std=c++11 your_file.cpp -o your_program or $ g++ -std=c++0x your_file.cpp -o your_program if the above doesn’t work.
Implicit garbage collection could have been added in, but it just didn’t make the cut. Probably due to not just implementation complications, but also due to people not being able to come to a general consensus fast enough. A quote from Bjarne Stroustrup himself: I had hoped that a garbage collector which could be optionally … Read more