Advanced Programming Techniques in D/

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void* Pointers and Pointers in Logical Expressions

void* Pointers and Pointers in Logical Expressions

Learn the use of void* pointers and pointers in logical expressions.

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void* can point at any type

Although it is almost never needed in D, C’s special pointer type void* is available in D as well. void* can point at any type:

D
import std.stdio;



void main () {

    int number = 42;

    double otherNumber = 1.25; 

    void * canPointAtAnything;

    canPointAtAnything = &number; 

    canPointAtAnything = &otherNumber;



    writeln(canPointAtAnything);

}

The void* above is able to point at variables of two different types: int and double.

void* pointers are limited in functionality. As a consequence of their flexibility, they cannot provide access to the pointee. ...