// A simple example to capture the following task dependencies.
//
// +---+
// +---->| B |-----+
// | +---+ |
// +---+ +-v-+
// | A | | D |
// +---+ +-^-+
// | +---+ |
// +---->| C |-----+
// +---+
//
#include <taskflow/taskflow.hpp> // the only include you need

int main(){

 tf::Executor executor;
 tf::Taskflow taskflow("simple");

 auto [A, B, C, D] = taskflow.emplace(
 []() { std::cout << "TaskA\n"; },
 []() { std::cout << "TaskB\n"; },
 []() { std::cout << "TaskC\n"; },
 []() { std::cout << "TaskD\n"; }
 );

 A.name("A");
 B.name("B");
 C.name("C");
 D.name("D");

 A.precede(B, C); // A runs before B and C
 D.succeed(B, C); // D runs after B and C

 executor.run(taskflow).wait();
 
 // dump the taskflow graph into a .dot format
 taskflow.dump(std::cout);

 return 0;
}