Question

当std::atomic<basic_type>创建为类成员而没有明确初始化时，basic_type是否保证class Foo { public: std::atomic<int> bar; }; int main() { Foo foo; return foo.bar; //foo.bar guaranteed to be 0? }的值为0 / 0.0（以适用者为准）：

int / uint / short / ushort / etc ...
和; float / double

示例：

<!--INCLUDE HEADER-->
<?php include 'includes/header.php';?>

<!--LOAD CONTET-->
<?php
/*if page is not set, redirect to index*/
if(!isset($_GET['page']) || strlen($_GET['page']) == 0)
{
    header("Location: index.php");
    die();
}
/*if page is set*/
else
{
    /*search page on contet directory*/
    $page = 'content/'.$_GET['page'].'.php';

    /*if page not found on content directory, redirect to index*/
    if(!glob($page))
    {
        header("Location: index.php");
        die();
    }
    /*if page is found, load as subpage*/
    else
    {
?>
    <main class = "<?php echo basename($page, '.php'); ?>">
        <?php include $page;?>
    </main>      
<?php
    }
}
?>

<!--INCLUDE FOOTER-->
<?php include 'includes/footer.php';?>

Answer 1

来自std::atomic default constructor的cppreference文档：

默认构造函数很简单：不进行初始化除了静态和线程局部对象的零初始化。 std :: atomic_init可用于完成初始化。

因此，在您的情况下，您将获得与仅声明"routing": { "config": { "routerClass": "sap.m.routing.Router", "viewType": "XML", "transition": "show", "viewPath": "InvestigateOPA.view", "controlAggregation": "pages", "controlId": "app" },

相同的保证

std :: atomic是否保证int，float等类型的初始化初始化为0 / 0.0？

1 个答案: