我们的 std::thread 的第一个参数是可以传带有任意参数列表的可调用对象的，但 pthread_create 只能接受...
autostudent2 = std::tie(names[2], ranks[2], score[2]); auto[a, b, c] = student2;// C++17 structured binding std::cout <<"student2> name: "<< a <<", rank: "<< b <<", score: "<< c << std::endl; return0; } // filename: ch1-tuple-example-1.cpp // compile th...
using System; public class Example { public static void Demo(System.Windows.Controls.TextBlock outputBlock) { Tuple<string, double, int>[] scores = { Tuple.Create("Jack", 78.8, 8), Tuple.Create("Abbey", 92.1, 9), Tuple.Create("Dave", 88.3, 9), Tuple.Create("Sam", 9...
比C#中new Tuple<T1,T2,T到天荒地老...>()实在好用太多(即便有了Tupple.Create()也是一样)然后下...
public static Tuple<T1> Create<T1>(T1 item1) { return new Tuple<T1>(item1); } public static Tuple<T1, T2> Create<T1, T2>(T1 item1, T2 item2) { return new Tuple<T1, T2>(item1, item2); } public static Tuple<T1, T2, T3> Create<T1, T2, T3>(T1 item1, T2 item2, T3 ...
沒有非泛型 System.ValueTuple 做為 tuple 處理站,以對應至每個數值 tuple 引數數目的建立方法。使用常值,例如 var t1 tuple 的輕鬆 = (「 Inigo Montoya",42)、 C# 7.0 (含) 以後程式設計人員至少取代 Create 方法。 實際上,C# 開發人員可以基本上忽略 System.ValueTuple 和 System.ValueTuple < T >。
var valueTuple = ValueTuple.Create(1,"Joydip","Kanjilal");var tuple = valueTuple.ToTuple(); 1. 2. ValueTuple 拥有比 Tuple 更简单的词法和更高的性能,此外,还可以修改它们的数据成员并且还可以给它们赋一些有意义的名字,总之,有太多的理由值得你用 ValueTuple 来代替 Tuple 了。
tuple_data = (('a', 1), ('b', 2, 'extra'), ('c', 3)) # 检查每个子元组的长度是否为2 if all(len(item) == 2 for item in tuple_data): dict_data = dict(tuple_data) else: print("元组元素数量不一致,无法转换为字典") # 输出: 元组元素数量不一致,无法转换为字典 通过这种方式,...
//Create a 7-tuple.varpopulation =newTuple<string,int,int,int,int,int,int>("New York",7891957,7781984,7894862,7071639,7322564,8008278);//Display the first and last elements.Console.WriteLine("Population of {0} in 2000: {1:N0}",
// Create a 7-tuple. var population = new Tuple<string, int, int, int, int, int, int>( "New York", 7891957, 7781984, 7894862, 7071639, 7322564, 8008278); // Display the first and last elements. Console.WriteLine("Population of {0} in 2000: {1:N0}", population.Item1, population...