C# 6.0 (C# vNext) 的新功能:Expression Bodied Functions and Properties
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C# 6.0 (C# vNext) 的新功能:Expression Bodied Functions and Properties
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Expression Bodied Function 它可以用在:
public class RgbColor(int r, int g, int b) {public int Red { get; } = r;public int Green { get; } = g;public int Blue { get; } = b;public string ToHex() =>string.Format("#{0:X2}{1:X2}{2:X2}", Red, Green, Blue);public static RgbColor operator - (RgbColor color) =>new RgbColor(color.Red ^ 0xFF,color.Green ^ 0xFF,color.Blue ^ 0xFF); }
用於「方法」的樣例:
public string ToHex() => string.Format("#{0:X2}{1:X2}{2:X2}", Red, Green, Blue); public override string ToString() => this.Name;
用於「user-defined operators」的樣例:
public static RgbColor operator - (RgbColor color) =>new RgbColor(color.Red ^ 0xFF,color.Green ^ 0xFF,color.Blue ^ 0xFF);
public static Complex operator +(Complex a, Complex b) => a.Add(b);
用於「read-only property」的樣例:
特別注意,這是 Read Only Property 而不是 Field?
public string ID => Guid.NewGuid().ToString();又一個樣例:
public class Point(int x, int y) {public int X => x;public int Y => y;public double Dist => Math.Sqrt(x * x + y * y);public Point Move(int dx, int dy) => new Point(x + dx, y + dy); }
用於「type conversions」的樣例:實現(xiàn) string 和 Name 之間的隱性轉(zhuǎn)換
public static implicit operator string(Name n) => n.First + " " + n.Last;
- methods
- user-defined operators
- type conversions
- read-only properties?
- indexers
public class RgbColor(int r, int g, int b) {public int Red { get; } = r;public int Green { get; } = g;public int Blue { get; } = b;public string ToHex() =>string.Format("#{0:X2}{1:X2}{2:X2}", Red, Green, Blue);public static RgbColor operator - (RgbColor color) =>new RgbColor(color.Red ^ 0xFF,color.Green ^ 0xFF,color.Blue ^ 0xFF); }
用於「方法」的樣例:
public string ToHex() => string.Format("#{0:X2}{1:X2}{2:X2}", Red, Green, Blue); public override string ToString() => this.Name;
用於「user-defined operators」的樣例:
public static RgbColor operator - (RgbColor color) =>new RgbColor(color.Red ^ 0xFF,color.Green ^ 0xFF,color.Blue ^ 0xFF);
public static Complex operator +(Complex a, Complex b) => a.Add(b);
用於「read-only property」的樣例:
特別注意,這是 Read Only Property 而不是 Field?
public string ID => Guid.NewGuid().ToString();又一個樣例:
public class Point(int x, int y) {public int X => x;public int Y => y;public double Dist => Math.Sqrt(x * x + y * y);public Point Move(int dx, int dy) => new Point(x + dx, y + dy); }
用於「type conversions」的樣例:實現(xiàn) string 和 Name 之間的隱性轉(zhuǎn)換
public static implicit operator string(Name n) => n.First + " " + n.Last;
用於「indexers」的樣例:
public Customer this[Id id] => store.LookupCustomer(id);版權(quán)聲明:本文博主原創(chuàng)文章。博客,未經(jīng)同意不得轉(zhuǎn)載。
轉(zhuǎn)載于:https://www.cnblogs.com/zfyouxi/p/4915100.html
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