Is it better to use enum or constant?
Enums are lists of constants. When you need a predefined list of values which do represent some kind of numeric or textual data, you should use an enum. You should always use enums when a variable (especially a method parameter) can only take one out of a small set of possible values.
What is constant and enum?
An enum type is a special data type that enables for a variable to be a set of predefined constants. The variable must be equal to one of the values that have been predefined for it. Because they are constants, the names of an enum type’s fields are in uppercase letters.
What is the benefit of using an enum rather than a #define constant?
The use of an enumeration constant (enum) has many advantages over using the traditional symbolic constant style of #define. These advantages include a lower maintenance requirement, improved program readability, and better debugging capability.
What is the difference between enum and #define constant in C?
enum defines a syntactical element. #define is a pre-preprocessor directive, executed before the compiler sees the code, and therefore is not a language element of C itself. Generally enums are preferred as they are type-safe and more easily discoverable.
What is the difference between enum and constant in C#?
A constant is a language feature which says that the variable won’t change value (so the compiler can do optimisations around that knowledge) where an enum is a specific type. Constants can be any data type but an enum is an enum.
What is difference between constant and enum in Java?
An enum can, just like a class , have attributes and methods. The only difference is that enum constants are public , static and final (unchangeable – cannot be overridden). An enum cannot be used to create objects, and it cannot extend other classes (but it can implement interfaces).
What is a Java enum?
A Java Enum is a special Java type used to define collections of constants. More precisely, a Java enum type is a special kind of Java class. An enum can contain constants, methods etc. Java enums were added in Java 5.
What is difference between enum and #define?
What is the difference between a constant and an enum class?
Technically, an Enum class is a constant class with more definitions, but an advantage to an Enum class is some pre-defined functionsthat you would have to define in your own constant class. However, you should also note that this may be overkill for small, singleton examples.
When should I use enum types?
You should use enum types any time you need to represent a fixed set of constants. Common examples include compass directions (values of NORTH, SOUTH, EAST, and WEST) and the days of the week.
How to use enumeration in C/C++?
To use enumeration “enum” keyword is used in C/C++. enum flag {constant1= 2, constant2=3, constant3=4….}; What makes “enum” different from “#define” is that it automatically assigns values to the variables. In the previous example if the values were not assigned=>
How are the variables assigned when using enum instead of macros?
The variables will be assigned the values automatically (constant1= 0, constant2= 1, constant3= 2…). There are various advantages of using enum instead of macros.