This helps avoid confusion if you have similar labels in different groups.Enumerator names are scoped within the enum type, meaning you must use the enum name to access them. No implicit conversion to integers which helps enhance type safety.Example...
It's no more clear to you, the programmer, (everyone knows what NULL means), but it's more explicit to the compiler, which will no longer see 0s everywhere being used to have special meaning when used as a pointer.std::nullptr_t...
In this tutorial, you learned about a special data type in C# known as an enumeration, orenum. Enums help you, the developer, define valid values for a given variable. You learned how to use enums in your projects, including using them as properties in your class definitions. Finally, ...
Each raster-operation code represents a Boolean operation in which the values of the pixels in the selected pen and the destination bitmap are combined. Following are the two operands used in these operations.Expand table Operand Meaning P Selected pen D Destination bitmap ...
, meaning it may or may not be legal and you have to explicitly check it. (Optionals are essentially a syntactic Maybe Monad, and way off topic.) You can even define an enumeration in terms of itself, which is just all kinds of weird. From the documentation: indirect enum Arithmetic...
Operand Meaning D Destination bitmap P Selected brush (also called pattern) S Source bitmap Following are the Boolean operators used in these operations.展開資料表 Operator Meaning a Bitwise AND n Bitwise NOT (inverse) o Bitwise OR x Bitwise exclusive OR (XOR) All Boolean operati...
and every expression has a type that is known at compile time. Java language is also a strongly typed language because types limit the values that a variable can hold or that an expression can produce, limit the operations supported on those values, and determine the meaning of the operations...
Colorproperty is a read-only computed property I could have also written it in a slightly more compact form where I omitted thegetkeyword but the meaning is the same. I’ve also had to declare the property as a variable rather than a constant as all computed properties are variables in ...
bacterial sample with an initial population of one cell and a doubling time of 1 hour. (a) When plotted on an arithmetic scale, the growth rate resembles a curve. (b) When plotted on a semilogarithmic scale (meaning the values on the y-axis are logarithmic), the growth rate appea...
The dict, set, and frozenset datatypes are "hashed collections", meaning that they are internally based on hash tables. Hash collections containhashableitems, meaning: hash(x) must not change while x is in the collection If two elements x and y are equal then hash(x) == hash(y) and x...