Question

Searching on the net I could not find any tutorials taking one through the steps to using the STL in an iOS app. So for instance, if I wanted to use a Vector in my app’s back end worker classes which don’t interact with any Cocoa structures.

If someone could perhaps give me a simple “Hello world” equivalent for this, that would be much appreciated. Or point me to any tutorials that they may have found.

Thanks

Answer 1

Here is some sample code. Create a new ios project, set BuildSettings->Apple LLVM Language->Compile Sources As to “Objective-C++”. Open “ViewController.m” and add this line

#import "queue"

and put this into the viewDidLoad.

typedef std::pair<int, int> P;
std::priority_queue<P> queue;
for (int i = 0; i < 10; ++i)
{
    queue.push(P(rand(), i));
}    
for (int i = 0; i < 10; ++i, queue.pop())
{
    P p = queue.top();
    printf("%u %u\n",p.first,p.second);
}

works for me.