java - What are enums and why are they useful? - Stack Overflow
2011年1月17日 · An Enumerated Type, also known as an Enum, is a very special data type where every single one of the values in its domain has a name (and usually, an index too). A normal data type has values, but doesn't bother naming or numbering each value. An enum data type, on the other hand, enumerates every single one of its values, hence the name.
How can I define an enumerated type (enum) in C?
It declares strategy as having an anonymous enumerated type, and assigns one of the declared values of that type to it. Moreover, if I wrap the code presented in an otherwise trivial main() function then it compiles fine for me, without even a warning, with gcc 4.4.7.
How to create enum like type in TypeScript? - Stack Overflow
2012年10月2日 · I'm working on a definitions file for the Google maps API for TypeScript. And I need to define an enum like type eg. google.maps.Animation which contains two properties: BOUNCE and DROP.
warning enumerated type mixed with another type? [closed]
2015年8月18日 · In case you are using a C compiler and you cannot change the definition of the function that should be called to take the enum-type in question as parameters: Make sure all enum values you are using in this context are >=0 .
What's the best way to declare an enum variable in C?
2016年2月9日 · How you then refer to the type depends on which form you used. If you declare the type as a tagged enum, then you can use it in declarations by referencing the tag: enum strategy_tag my_strategy = RANDOM; . If you declare the type as a typedef'd name then you use the defined name as the type name. strategy_type my_strategy = IMMEDIATE;
How to get number of elements in enumerated type
2014年9月28日 · With an enumerated type, like the below, is there a nice way to get the number of elements in the enumerated type enum_t: type enum_t is (ALFA, BRAVO, CHARLIE); -- Number of elements is 3 -- Don't work: length is not valid attribute for enum_t constant ENUM_LENGTH : natural := enum_t'length; -- illegal!
How to use .values () with enumerated type Java - Stack Overflow
I am trying to use the values method to find the given value of an enumerated type. For some reason it says that I have to create a values() method, but that should be a built in method (at least I think so). Here is the code that I am having problems with:
C - Using enum for bit flags - warning: enumerated type mixed …
2019年8月7日 · The type of an enumeration constant, LED_RED in your case, is always of type int which is signed. The type of an enumerated type, LedType in your case is implementation-defined. The compiler can pick a smaller integer type if the values used would fit inside one.
fpga - Type enumeration in VHDL - Stack Overflow
2020年4月22日 · An enumerated type is a scalar with values that are named. For instance std_ulogic which is the base type of std_logic is a character enumerated type. Array type string has elements of the same subtype, enumerated type character. An enumerated type declares both the type and it's enumeration values which can make for smaller code.
Warning: #188-D: enumerated type mixed with another type
2020年6月9日 · So, cast to the enum type to tell your compiler you know what you're doing. To do that, you'll need to give its type a name. To do that, you'll need to give its type a name. Here is a working example, which gives me no warnings with gcc -std=c99 -Wall -Wextra -Wpedantic :