Python 下的 return 关键字 显示地返回一个元组(tuple),当然 return 关键字返回多个用逗号隔开的内容时,会自动把它们组合为元组类型(tuple)。 def make_sum(a, b): return '+', a, b >> make_sum(1, 2) ('+', 1, 2) 1. 2. 3. 4. 5.
Most directly, you can return a tuple or pair, e.g., givenautof(inta,intb) {returnstd::make_tuple(a, b); } Since C++11: 1 2 inta, b; std::tie(a, b) = f(1, 2); Since C++17: auto[a, b] = f(1, 2);// destructuring declaration ...
In other words, it is the comma(s) that make the tuple not quite the parentheses. But if you are returning an empty tuple (this is not true in our example), you do need parentheses. You can also remove the parentheses in the line where you unpack your tuple. For instance: ...
如果需要返回三个或更多的返回值,则可以基于tuple(元组)这一数据结构,用类似于上述操作的方法来实现。...举一个例子,假如我们想通过一个函数返回三个返回值,就需要将前述代码中函数的类型定义为tuple,将make_pair()函数更改为make_tuple(),且在调用函数时首先将返回值赋给一个 83710 java:函数--返回...
defmake_sum(a, b):return('+', a, b) >> make_sum(1,2) ('+',1,2) 显示地返回一个元组(tuple),当然 return 关键字返回多个用逗号隔开的内容时,会自动把它们组合为元组类型(tuple)。 defmake_sum(a, b):return'+', a, b >> make_sum(1,2) ('+',1,2) ...
C# 7.0 shorthand syntax of Tuple not available C# 8 - non-nullable string feature C# A class property of another class type C# access app.config file in dll C# access previous month-year C# Active Directory and Accounts Locked Out C# add XML child node to specific parent C# Adding data fr...
在我们看来return就是返回值得意思,但是就我而言 我觉得自己太粗心大意了, return是返回一个方法的值,如果你没有定义一个方法却用return 去返回这就大错特错了 官方文档中提示: The key word "return" which should be used only in a function inPythonprogramming language.If you use it in a "for" loop...
When you’re writing a function that returns multiple values in a single return statement, you can consider using a collections.namedtuple object to make your functions more readable. namedtuple is a collection class that returns a subclass of tuple that has fields or attributes. You can access ...
: IsSuccess(isSuccess), Message(message), ErrorCode(errorCode), Content(std::make_tuple(content...)) { } private: /// @brief 不关注Content /// @param message /// @param errorCode QICResult(constQString& message,interrorCode) : IsSuccess(false), Message(message), ErrorCode(errorCode) ...
个元组tuple,返回时元组可以省略括号...函数的用法: 1># 函数在执行过程中一旦遇到return,函数就执行完毕,并将结果返回。 # 函数在执行过程中没有遇到return时,返回值None. def hello(): return Eclipse中Android的Log怎么过滤 Android的Log会在Eclipse中的LogCat窗口打印出来,但是我想只看System.out.print打印...