Advanced Programming Techniques in D/

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Semantics

Semantics

Get introduced to semantics in this lesson.

We'll cover the following...

Merely understanding how these operators work at bit-level may not be sufficient to see how they are useful in programs. The following sections describe common ways that these operators are used.

| is a union set

The | operator produces the union of the 1 bits in the two expressions.

As an extreme example, let’s consider two values that both have alternating bits set to 1. The union of these values would produce a result where all of the bits are 1:

D
import std.stdio;



void print(uint number) {

    writefln(" %032b %08x %10s", number, number, number); 

}



void main () {

    uint lhs = 0xaaaaaaaa; 

    uint rhs = 0x55555555;

    

    print(lhs);

    print(rhs);

    writeln("| --------------------------------"); 

    print(lhs | rhs);

}

& is an intersection set

The & operator ...