I have following pattern:Pseudo code:I'm unable to come up with some nice clean code for this.This link provides different approaches, but they all look more or less cumbersome to me.
can anybody explaine the memory layout ofdoes it provide contiguous memory block of a 2D array with 2 rows of 5 elements?
I'm trying to copy a map into a vector of pair, so I can then sort the vector by the second data member of the pairs. I have resolved this doing like this:
I want to create a std::vector<float> vpd which will be a reference to float*.How should I modify the code, if I want get 23 from cout?
I would like to write a C++ function with one argument such that one can pass in either any of the following types:
I have a simple function template to calculate the average value of a container:I added in the static_cast<>s above to try to force the calculation to the desired type <T>.
C++14 final working draft makes the following comment about std::vector:Storage management is handled automatically, though hints can be given to improve efficiency.
If I have something like:Would STL be able to preallocate space in newVector before processing and adding the new elements? I know it is not a requirement of the algorithm, but would a "good" implementation be able to optimize that? Or, for this kind of case, should I prefer adding...
I have a problem with constant single element std::vector when pass through a function. C++ compiler automatically call wrong function when the std::vector variable contain a single element. This is though the policy of C++ design. However is there any explicit method to specify in such a case. Here are...
Justin's answer on another question made an observation that I find very interesting but can't quite explain. Consider the following code: