这将编译: int main() {
const int x = 123;
auto g = []() { std::cout << x << "\n"; };
g();
}
但这: int main(){
const float x = 123;
auto g = []() { std::cout << x << "\n"; };
def __init__(self):
#self.data = []
self.random_word = random.choice(open("EnglishDictionary.txt").readlines()).strip()
self.length_notice = "The word you're guessing is {} letters long
这是问题出现在“C++入门”的§13.3代码,5天: void swap(Foo &lhs, Foo &rhs)
{
using std::swap;
swap(lhs.h, rhs.h); // uses the HasPtr version of swap
// swap other members of type Foo
}
书提及具体的类交换不是由使用