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Top Forums Programming Size of Derived class, upon virtual base class inheritance Post 302863089 by techmonk on Saturday 12th of October 2013 07:25:08 AM
Old 10-12-2013
Code Size of Derived class, upon virtual base class inheritance

I have the two class definition as follows.
Code:
class A { public: int a; };

class B : virtual public A{ };

The size of class A is shown as 4, and size of class B is shown as 16. Why is this effect ?.
 

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MONGO(3)								 1								  MONGO(3)

The Mongo class [deprecated]

INTRODUCTION
A connection between PHP and MongoDB. This class extends MongoClient and provides access to several deprecated methods. For backwards compatibility, it also defaults the "w" option of its constructor argument to 0, which does not require write operations to be acknowledged by the server. See MongoClient.__construct(3) for more information. Warning This class has been DEPRECATED as of version 1.3.0. Relying on this feature is highly discouraged. Please use MongoClient instead. CLASS SYNOPSIS
Mongo Mongoextends MongoClient Methods o protected bool Mongo::connectUtil (void ) o publicstatic int Mongo::getPoolSize (void ) o public string Mongo::getSlave (void ) o public bool Mongo::getSlaveOkay (void ) o public array Mongo::poolDebug (void ) o publicstatic bool Mongo::setPoolSize (int $size) o public bool Mongo::setSlaveOkay ([bool $ok = true]) o public string Mongo::switchSlave (void ) Inherited methods o public bool MongoClient::close ([boolean|string $connection]) o public bool MongoClient::connect (void ) o public array MongoClient::dropDB (mixed $db) o public MongoDB MongoClient::__get (string $dbname) o publicstatic array MongoClient::getConnections (void ) o public array MongoClient::getHosts (void ) o public array MongoClient::getReadPreference (void ) o public array MongoClient::getWriteConcern (void ) o public bool MongoClient::killCursor (string $server_hash, int|MongoInt64 $id) o public array MongoClient::listDBs (void ) o public MongoCollection MongoClient::selectCollection (string $db, string $collection) o public MongoDB MongoClient::selectDB (string $name) o public bool MongoClient::setReadPreference (string $read_preference, [array $tags]) o public bool MongoClient::setWriteConcern (mixed $w, [int $wtimeout]) o public string MongoClient::__toString (void ) PHP Documentation Group MONGO(3)
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