在index.ts中编写 String 到 Enum 的转换代码。 编译TypeScript tsc 1. 运行生成的 JavaScript nodeindex.js 1. 通过下方的序列图,可以清晰看到编译过程中的步骤: Node.jsCompilerDeveloperNode.jsCompilerDeveloper编写代码编译 TypeScript返回编译结果执行生成的
我们可以写一个方法来实现字符串向枚举的转换,如下所示: publicclassEnumConverter{publicstaticOrderStatusconvertStringToEnum(Stringstatus){try{returnOrderStatus.valueOf(status.toUpperCase());}catch(IllegalArgumentExceptione){System.out.println("无效的订单状态: "+status);returnnull;// 或可以抛出自定义异常}...
GFG |string{switch(convertingStr) {case"GeeksforGeeks":returnGFG.name;case"A Computer Science portal.":returnGFG.desc;default:return`Pass either"${GFG.name}"or"${GFG.desc}"as testingstringto the function`; } } console.log(convertStrToEnum("GeeksforGeeks")); console.log(convertStrToEnum(...
使用name()方法能够获得Enum的名称,name()方法是枚举类内置的方法。 三、使用toString()方法转换为String 像大多数的对象一样,默认都会有一个toString()方法,枚举也不例外 代码语言:javascript 代码运行次数:0 运行 AI代码解释 publicclassVehicleTest{publicstaticvoidmain(String[]args){System.out.println(Vehicle.B...
代码语言:javascript 复制 iex> string = "\u0065\u0301" iex> byte_size(string) 3 iex> String.length(string) 1 iex> String.codepoints(string) ["e", "́"] iex> String.graphemes(string) ["é"] 虽然上面的例子是由两个字符组成的,但用户认为它是一个。 图形符号也可以是被某些语言解释...
You can use the valueOf() method to convert a string to an enum value in Java. The valueOf() method takes a string as an argument and returns the corresponding enum object. Let us say we have the following enum class that represents the days of the week: public enum Day { MONDAY, ...
Interesting thing is that you can use enum as Type. This is what compile to Javscript: But if you add 'const' to enum: const enum Sizes { Small= "small", Medium= "medium", Large= "large" } It compiles to such smaller amount code, with only necessary information...
Enums are not natively supported in JavaScript, however, Object.freeze can be used to imitate their functionality. This is because TypeScript treats enums as if they were real objects at runtime, even non-const enums. We can use this construct as shown in the example below: const direction...
Int–>Enum 1.可以强制转换将整型转换成枚举类型。 例如: Colorscolor=(Colors)2;//,那么color即为Colors.Blue 2.利用Enum的静态方法ToObject。 publicstaticObjectToObject(TypeenumType,intvalue) 例如: Colorscolor=(Colors)System.Enum.ToObject(typeof(Colors),2);//,那么color即为Colors.Blue ...
using System; class Conversion { enum Flowers { None, Daisy = 1, Lili = 2, Rose = 3 } static void Main() { string stringvalue = "Rose"; Flowers Flower = (Flowers)Enum.Parse(typeof(Flowers), stringvalue); // To check if we have converted successfully if (Flower == Flowers.Rose)...