当您在使用 Enum 类型时,如果尝试将整数值强制转换为 Enum 类型,可能会出现 Enum Integer Cast 异常。这是因为您尝试将一个不存在于 Enum 类型中的整数值转换为 Enum 类型。为了避免这种异常,您可以在尝试强制转换之前检查整数值是否存在于 Enum 类型中。 例如,在 Java 中,您可以使用EnumSet和EnumMap来检查整数值...
enum class cast? Jul 17, 2014 at 2:51am squarehead(24) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 #include <iostream>enumclassEnergyState :unsignedchar{ ON, OFF };intmain() { EnergyState state;unsignedchars; std::cin >> s; state =static_cast<EnergyState>(s);/...
将它们转换成C#列表,这样我们就可以使用list.Contains()方法来检查给定的整数是否存在于enum变量中。 varintValue=100;varenumValues=Enum.GetValues(typeof(LogLevel)).Cast<int>().ToList();if(enumValues.Contains(intValue)){Console.WriteLine("We can Cast C# int to Enum");LogLevelloggingValue=(LogLevel...
{ return c >= static_cast<ctrl_t>(0); } May 13 22:40:20 | ^ May 13 22:40:20 /build/contrib/abseil-cpp/absl/container/internal/raw_hash_set.h:484:12: note: enum declared here May 13 22:40:20 484 | enum class ctrl_t : int8_t { May 13 22:40:20 | ~~~^~~~ May 13...
mysql高级函数FIND_IN_SET,ENUM和SET,LOCATE,ELT,FIELD,INTERVAL,COUNT,CAST,NULLIF,ISNULL,IFNULL,IF,CONVERT,COALESCE # FIND_IN_SET FIND_IN_SET(needle,haystack); /** 第一个参数needle是要查找的字符串。 第二个参数haystack是要搜索的逗号分隔的字符串列表。
#include <iostream> using std::cout; enum Language { English, French, German, Italian, Spanish }; int main() { Language tongue = German; tongue = static_cast<Language>(tongue + 1); cout << "\n Current language is now " << tongue << std::endl; return 0; } ...
java/kotlin high performance lightweight solution for jdbc query,support oltp and olap query,一款java下面支持强类型、轻量级、高性能的ORM,致力于解决jdbc查询,拥有对象模型筛选、隐式子查询、隐式join - __cast(Object.class)如果是枚举应该生成为Enum.class · Iss
Enum to Byte Array Enum.GetHashCode() vs cast Enumerate IP addresses in a range enums inside interface ? Environment Variables Refresh Environment.Exit, Dispose and stopping of Windows Services Environment.Exit(0) not exiting Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + @"\Report...
enum_first --- sad (1 row) digoal=# select enum_range('ok'::mood,null); enum_range --- {ok,happy} (1 row) create cast:http://www.postgresql.org/docs/9.3/static/sql-createcast.html,http://www.php100.com/manual/PostgreSQL8/sql-createcast.html drop cast:http://www.postgresql...
Hint: For input, you can convert an int into an enum with static_cast. 1 2 3 4 DayOfWeek day;intdayNumber; cin >> dayNumber; day =static_cast<DayOfWeek>(dayNumber); and the output I am supposed to get should look like this: ...