我们可以使用Enum.IsDefined()方法来检查转换后的整数值是否存在于给定的enum类型中是否存在。 varenumValue=(LogLevel)1;if(Enum.IsDefined(typeof(LogLevel),enumValue)){Console.WriteLine("The converted int to enum value is",enumValue);}else{Console.WriteLine("Cannot Convert int to Enum",enumValue)...
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AppleGrapesBanannaargse1MyEnume2MyEnumConsolee1e2Console.ReadLine();} Share: Css Tutorials & Demos How rotate an image continuously in CSS In this demo, we are going to learn about how to rotate an image continuously using the css animations. ...
C++类型cast之static/dynamic/reinterpret/const C 风格(C-style)强制转型如下: (T) expression // cast expression to be of type T 函数风格(Function-style)强制转型使用这样的语法: T(expression) // cast expression to be of type T 这两种形式之间没有本质上的不同,它纯粹就是一个把括号放在哪的问题。
Enum const? true, false restrict? true, false volatile? true, false name String members * NodeList of Enumerator CustomType const? true, false For typedef'd names. restrict? true, false volatile? true, false name String Void const? true, false const is for things like const ...
②用于基本数据类型之间的转换,如把int转换成char,把int转换成enum。这种转换的安全性也要开发人员来保证。 ③把空指针转换成目标类型的空指针。 ④把任何类型的表达式转换成void类型。 注意:static_cast不能转换掉exdivssion的const、volitale、或者__unaligned属性。
[Flags] public enum PostType : byte { Ar = 0b1, GlCr = 0b10, GlDr = 0b100 } koenbeuk added bug help wanted labels Mar 5, 2024 PhenX added a commit to PhenX/EntityFrameworkCore.Projectables that referenced this issue Mar 5, 2024 Fix QualifiedNameSyntax visiting (fixes koenbeuk#...
enum E {first=1, second=2, third=3}; void use_of_static_cast(C* c1) { B* bp = c1; // implicit conversion C* c2 = static_cast<C*>(bp); // reverse implicit conversion int i = second; // implicit conversion E e = static_cast<E>(i); // reverse implicit conversion ...
dynamic_castto a pointer to the underlying type of a boxed enum will fail at runtime, returning 0 instead of the converted pointer. dynamic_castwill no longer throw an exception whentype-idis an interior pointer to a value type; instead, the cast fails at runtime. The cast returns the ...
<'\n';// 7b. int to enum, enum to another enumE e2=static_cast<E>(two);[[maybe_unused]]EU eu=static_cast<EU>(e2);// 7f. pointer to member upcastintD::*pm=&D::m;std::cout<<"7f) "<<br.*static_cast<intB::*>(pm)<<'\n';// 7g. void* to any object pointervoid*...