bool getValue( out int x1, out int x2, out int x3 ); 使用传出引用out
Tuple<int, int, int> Foo(int[] data) { return new Tuple<int, int, int>(data.Min(), data.Max(), data.Sum()); } 使用 int[] data = { 1, 2, 3, 4, 5 }; var r = Foo(data); Console.WriteLine("min {0}, max {1}, sum {2}.", r.Item1, r.Item2, r.Item3);
比如这样,或算定义一个类.读出来的给类的字段赋. static void Main(string[] args) { int maxnum; int minnum; int totalnum; int[] numbers = { 1, 2, 3, 4, 5, 6, 7, 8, 9 }; Method(numbers,out maxnum,out minnum,out totalnum); Console.WriteLine("MAX:{0}..MIN:{1}..TOTAL:{2}", maxnum, minnum, totalnum); Console.ReadLine(); } static void Method(int[] num, out int max, out int min, out int total) { max = num.Max(); min = num.Min(); total = num.Sum(); }
再来一个: IEnumerable<int> Foo(int[] data) { yield return data.Min(); yield return data.Max(); yield return data.Sum(); } 使用 int[] data = { 1, 2, 3, 4, 5 }; var r = Foo(data).ToArray(); Console.WriteLine("min {0}, max {1}, sum {2}.", r[0], r[1], r[2]);
再来一个 object Foo(int[] data) { return new { min = data.Min(), max = data.Max(), sum = data.Sum() }; } 使用 int[] data = { 1, 2, 3, 4, 5 }; dynamic r = Foo(data); Console.WriteLine("min {0}, max {1}, sum {2}.", r.min, r.max, r.sum);
比如这样,或算定义一个类.读出来的给类的字段赋. static void Main(string[] args) { int maxnum; int minnum; int totalnum; int[] numbers = { 1, 2, 3, 4, 5, 6, 7, 8, 9 }; Method(numbers,out maxnum,out minnum,out totalnum); Console.WriteLine("MAX:{0}..MIN:{1}..TOTAL:{2}", maxnum, minnum, totalnum); Console.ReadLine(); } static void Method(int[] num, out int max, out int min, out int total) { max = num.Max(); min = num.Min(); total = num.Sum(); }谢谢了!!
2. 返回 int[] 数组, 再复杂就返回自定义的类
3. 参数out
(2)返回数组、结构体、自定义类型
(3)返回Tuple<int, int, int>
使用传出引用out
{
return new Tuple<int, int, int>(data.Min(), data.Max(), data.Sum());
}
使用
int[] data = { 1, 2, 3, 4, 5 };
var r = Foo(data);
Console.WriteLine("min {0}, max {1}, sum {2}.", r.Item1, r.Item2, r.Item3);
static void Main(string[] args)
{
int maxnum;
int minnum;
int totalnum;
int[] numbers = { 1, 2, 3, 4, 5, 6, 7, 8, 9 };
Method(numbers,out maxnum,out minnum,out totalnum);
Console.WriteLine("MAX:{0}..MIN:{1}..TOTAL:{2}", maxnum, minnum, totalnum);
Console.ReadLine(); }
static void Method(int[] num, out int max, out int min, out int total)
{
max = num.Max();
min = num.Min();
total = num.Sum();
}
IEnumerable<int> Foo(int[] data)
{
yield return data.Min();
yield return data.Max();
yield return data.Sum();
}
使用
int[] data = { 1, 2, 3, 4, 5 };
var r = Foo(data).ToArray();
Console.WriteLine("min {0}, max {1}, sum {2}.", r[0], r[1], r[2]);
object Foo(int[] data)
{
return new { min = data.Min(), max = data.Max(), sum = data.Sum() };
}
使用
int[] data = { 1, 2, 3, 4, 5 };
dynamic r = Foo(data);
Console.WriteLine("min {0}, max {1}, sum {2}.", r.min, r.max, r.sum);
static void Main(string[] args)
{
int maxnum;
int minnum;
int totalnum;
int[] numbers = { 1, 2, 3, 4, 5, 6, 7, 8, 9 };
Method(numbers,out maxnum,out minnum,out totalnum);
Console.WriteLine("MAX:{0}..MIN:{1}..TOTAL:{2}", maxnum, minnum, totalnum);
Console.ReadLine(); }
static void Method(int[] num, out int max, out int min, out int total)
{
max = num.Max();
min = num.Min();
total = num.Sum();
}谢谢了!!