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Full Discussion: Purpose of empty Class
Top Forums Programming Purpose of empty Class Post 302227986 by deepthi.s on Friday 22nd of August 2008 11:25:15 AM
Old 08-22-2008
Purpose of empty Class

class A
{};

int main()
{
A a;
}

What is the purpose of such empty classes in C++?Why is it allowed in the language specification?
 

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UOPZ_COMPOSE(3) 							 1							   UOPZ_COMPOSE(3)

uopz_compose - Compose a class

SYNOPSIS
void uopz_compose (string $name, array $classes, [array $methods], [array $properties], [int $flags]) DESCRIPTION
Creates a new class of the given name that implements, extends, or uses all of the provided classes PARAMETERS
o $name - A legal class name o $classes - An array of class, interface and trait names o $methods - An associative array of methods, values are either closures or [modifiers => closure] o $properties - An associative array of properties, keys are names, values are modifiers o $flags - Entry type, by default ZEND_ACC_CLASS RETURN VALUES
EXAMPLES
Example #1 uopz_compose(3) example <?php class myClass {} trait myTrait {} interface myInterface {} uopz_compose( Composed::class, [ myClass::class, myTrait::class, myInterface::class ], [ "__construct" => function() { /* ... */ } ]); var_dump( class_uses(Composed::class), class_parents(Composed::class), class_implements(Composed::class)); ?> The above example will output something similar to: array(1) { ["myTrait"]=> string(7) "myTrait" } array(1) { ["myClass"]=> string(7) "myClass" } array(1) { ["myInterface"]=> string(11) "myInterface" } PHP Documentation Group UOPZ_COMPOSE(3)
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