Search results
Results from the WOW.Com Content Network
The void type, in several programming languages, more so curly bracket programming languages derived from C and ALGOL 68, is the return type of a function that returns normally, but provides no result value to its caller.
The void pointer, or void*, is supported in ANSI C and C++ as a generic pointer type. A pointer to void can store the address of any object (not function), [ a ] and, in C, is implicitly converted to any other object pointer type on assignment, but it must be explicitly cast if dereferenced.
Void safety (also known as null safety) is a guarantee within an object-oriented programming language that no object references will have null or void values. In object-oriented languages, access to objects is achieved through references (or, equivalently, pointers ).
the return type is int.The program can therefore rely on the method returning a value of type int.Various mechanisms are used for the case where a subroutine does not return any value, e.g., a return type of void is used in some programming languages:
In computer programming, a callback is a function that is stored as data (a reference) and designed to be called by another function – often back to the original abstraction layer. A function that accepts a callback parameter may be designed to call back before returning to its caller which is known as synchronous or blocking.
Void ratio, the volume of void-space to solid space in a material; Void safety, in object-oriented programming, a guarantee that no object references will have null values; Void type, in programming languages, a keyword indicating the absence of data; Void set or empty set, the mathematical set with no elements
In Haskell, the bottom type is called Void. [3] In Common Lisp the type NIL, contains no values and is a subtype of every type. [4] The type named NIL is sometimes confused with the type named NULL, which has one value, namely the symbol NIL itself. In Scala, the bottom type is denoted as Nothing.
If a function has the return type void, the return statement can be used without a value, in which case the program just breaks out of the current function and returns to the calling one. [1] [2] Similar syntax is used in other languages including Modula-2 [3] and Python. [4] In Pascal there is no return statement. Functions or procedures ...