cpp-taskflow/example/emplace.cpp at master · WhyBingo/cpp-taskflow · GitHub

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// This example shows how to create task using either 'emplace'

// or 'silent_emplace'.

#include <cassert>

#include <taskflow/taskflow.hpp>

int main(){

tf::Taskflow tf;

// The method emplace gives you a future to retrieve the result.

// You may pass this future to another thread or program context

// to enable more asynchronous control flows.

auto [A, fuA] = tf.emplace([] () {

std::cout << "Task A\n";

return 1;

});

A.name("A");

// The method silent_emplace won't give you a future.

// Therefore, you won't be able to get the return value of the callable.

// Typically, silent_emplace is used for callables with no return values.

auto B = tf.silent_emplace([] () {

std::cout << "Task B\n";

return "no one can get me";

});

B.name("B");

// The future of A won't be ready until you execute the taskflow.

tf.wait_for_all();

assert(fuA.get() == 1);

return 0;

}

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