I am getting this error message when I build my code,
"a lambda that has been specified to have a void return type cannot return a value"
bool StockCheck::InStock(const Shop& shop) const
{
return std::any_of(m_products, [&shop, this](const std::unique_ptr<SelectedProduct>& selected)
{
auto inStock = selected->ProductInStock(shop);
return inStock != SelectedProduct::NOT_IN_STOCK && selected->GetProductInStock(code);
});
}
I am using VS2010, is it a problem? This will work in VS2013?
Problem is, that you have lambda with two lines and compiler cannot determine return type (so it's equal to void) in C++11. You can specify ret. type manually like
return std::any_of(m_products.begin(), m_products.end(),
[&shop, this](const std::unique_ptr<SelectedProduct>& selected) -> bool
{
auto inStock = selected->ProductInStock(shop);
return inStock != SelectedProduct::NOT_IN_STOCK && selected->GetProductInStock(code);
});
or write without variable inStock
just in one line.
return std::any_of(m_products.begin(), m_products.end(),
[&shop, this](const std::unique_ptr<SelectedProduct>& selected)
{
return selected->ProductInStock(shop) != SelectedProduct::NOT_IN_STOCK &&
selected->GetProductInStock(code);
});
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.