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javascriptc++functioncallback
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Reputation: 5642

JavaScript and C++ Callback Function with Arguments

How would I achieve the following JavaScript implementation of callbacks in C++? Below is taken from a JavaScript snippet. I'd like to achieve the same functionality:

var playAdBreak = function(adbreak, callback) 
{
    var x;
    playSingle(x, function() { playAdBreak.call(this, adbreak, callback); });
};

var playSingle = function(abc, callback) 
{

};

Upvotes: 0

Views: 177

Answers (2)

Siddhant Swami
Siddhant Swami

Reputation: 325

The modest way of doing it that I can think is

void callBackDefinition()
{
    printf("I was called");
}

void callBackExecutor(void (*callBack))
{
    callBack();
}

main()
{
    callBackExecutor(&callBackDefinition);
    return 0;
}

Upvotes: 1

angdev
angdev

Reputation: 108

If you are under C++11 environment, you can use lambda, std::function. Below code doesn't have same functionality, but it can convert into like below except for : C++ lambda is not closure and there is no this for a function.

auto playSingle = [&](const T &abc, std::function<void()> callback) {

}

auto playAdBreak = [&](const Y &adbreak, std::function<void()) callback) {
  T x;
  playSingle(x, [=]() { playAdBreak(adbreak, callback); });
}

Upvotes: 1

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