枚举到字符串 C++
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时间：2020-08-28 19:49:59 来源:igfitidea点击:
Enum to String C++
提问by bobobobo
I commonly find I need to convert an enum to a string in c++
我通常发现我需要在 C++ 中将枚举转换为字符串
I always end up doing:
我总是最终做：
enum Enum{ Banana, Orange, Apple } ;
char * getTextForEnum( int enumVal )
{
switch( enumVal )
{
case Enum::Banana:
return "bananas & monkeys";
case Enum::Orange:
return "Round and orange";
case Enum::Apple:
return "APPLE" ;
default:
return "Not recognized..";
}
}
Is there a better or recognized idiom for doing this?
这样做有更好的或公认的习语吗？
采纳答案by Mark Ransom
enum Enum{ Banana, Orange, Apple } ;
static const char * EnumStrings[] = { "bananas & monkeys", "Round and orange", "APPLE" };
const char * getTextForEnum( int enumVal )
{
return EnumStrings[enumVal];
}
回答by Blagovest Buyukliev
Kind of an anonymous lookup table rather than a long switch statement:
一种匿名查找表而不是长 switch 语句：
return (const char *[]) {
"bananas & monkeys",
"Round and orange",
"APPLE",
}[enumVal];
回答by nathan
You could throw the enum value and string into an STL map. Then you could use it like so.
您可以将枚举值和字符串放入 STL 映射中。然后你可以像这样使用它。
return myStringMap[Enum::Apple];
