c++11:枚举类型(enum)的前向声明(forward declaration) 在C++11之前,C++标准是不支持枚举类型的前向声明的。我说出这个结论,肯定有用msvc的童鞋不愿意了:口胡,MSVC明明就可以对枚举类型前向声明,下面这样的前向声明在MSVC下好好的,没有任何问题。 代码语言:javascript 复制 enumE; 是哦,你说的对,MSVC下上面的写...
// forward declarationenumclassStatus;// use of fwd-declared enumvoidcontinueProcessing(Statuss); 2) 潜在类型 enum class的潜在类型 (underlying type),缺省为 int 型,当然也可自定义潜在类型。无论哪种方式,编译器都会预先知道枚举成员的大小 // underlying type is intenumclassStatus;// underlying type ...
3. the underlying type of an enum cannot be specified, causing confusion,compatibility problems, and makes forward declaration impossible. The new enums are "enum class" because they combine aspects of traditional enumerations (names values) with aspects of classes (scoped members and absense of c...
// forward declaration enum class Status; // use of fwd-declared enum void continueProcessing(Status s); 2) 潜在类型enum class 的潜在类型 (underlying type),缺省为 int 型,当然也可自定义潜在类型。无论哪种方式,编译器都会预先知道枚举成员的大小1...
enum class Enum: unsigned int; //Forward declaration constexpr Enum constant = static_cast<Enum>(2); enum class Enum: unsigned int { A = 0, B = 1, C = B, //This works D = constant, //This FAILS E = static_cast<unsigned int>(constant), //This works F = Enum::B ...
So I've got VS2010RC and am playing around with the C++0x features. I can't figure these ones out and can't find any documentation on these two features. Not even the simplest attempts compile. enum class E { test }; int main() {}fails with: ...
//forward-declaration enum AB; //Error However, it is fine to forward-declare a scoped enum or an unscoped enum with a specified underlying type: //forward-declaration enum Asset : uint8_t; //OK enum class Shape : uint8_t; //OK The uncertainty about the size and signedness of un...
C++11中enumclass的使用 C++11中enumclass的使⽤ 本⽂链接：枚举类型(enumeration)使我们可以将⼀组整型常量组织在⼀起。和类⼀样，每个枚举类型定义了⼀种新的类型。枚举属于字⾯值常量类型。C++包含两种枚举：限定作⽤域的和不限定作⽤域的。这⾥主要介绍限定作⽤域的。不限定作⽤域的使⽤...
GotoDefn 935 Object browser / Class View command: Go to Definition GotoDecl 936 Object browser / Class View commandcommand: Go to Declaration BrowseDefn 937 Object browser / Class View command: Browse Definition SyncClassView 938 Object browser / Class View command: Sync Class View ShowMem...
GotoDefn 935 Object browser / Class View command: Go to Definition GotoDecl 936 Object browser / Class View commandcommand: Go to Declaration BrowseDefn 937 Object browser / Class View command: Browse Definition SyncClassView 938 Object browser / Class View command: Sync Class View ShowMem...