Illogicist - Polymorphism of Death
2008-05-30 00:31:00 Type: DemoYear: 2002Label: Self-releasedCountry: ItalyGenre: Technical Death MetalOfficial Website01. Warped02. Vision of Decay03. GrimacesDownload
Sever-Side Polymorphism or Crime-ware as a Service (CaaS)
2008-04-16 22:40:00 As the threat-landscape is evolving hackers are constantly changing technique in order to counter-act detection technologies that vendors develop. I remember a few years ago when polymorphism and metamorphism were used as a way to constantly generate new variants of worms. Essentially the virus morphed itself into different variations and successfully evaded signature based technologies. Eventually ...
Server Side Polymorphism & Crime-Ware as a Service Model (CaaS)
2008-04-16 06:05:00 As the threat-landscape is evolving hackers are constantly changing technique in order to counter-act detection technologies that vendors develop. I remember a few years ago when polymorphism and metamorphism were used as a way to constantly generate new variants of worms. Essentially the virus morphed itself into different variations and successfully evaded signature based technologies. Eventually ...
PHP5 OOPS Tutorials - Polymorphism
2008-02-11 08:09:00 In this tutorial we will learn the following: Meaning of Polymorphism Why method polymorphism cannot be achieved in PHP PHP 5 Object Polymorphism
Tea polymorphism
2007-11-16 08:22:00 Marketing in this time immeasurable tea type easily met and obtainable at the price of cheap. Tea polymorphism on the market to gratify tea beneficiary. There is tea of form of powder tea leaf to be being filtered formerly after poured boiling water into, teabag which wrapped in packaging paper, and tea ready drink in packaging of glass bottle and tetarapack.  1.       Tea form of leaf Tea of form of leaf usually for herb tea or green tea. Tea leaf only furled and dried so that at the (time) of poured boiling water into by isre- tea leaf blooming. The excellence of tea leaf relatively fully and don’t break or out at the elbow because the process is don’t experience fermentation.   2.       Powder tea  Powder tea usually for black tea and tea oolong. Sam is poured boiling water into will be obtained by more condensed extract, causing require to pay attention to the measuring of time of pouring boiling water into. Tea in the form of powder good fo...
OOPS in PHP 5 - Polymorphism
2007-10-31 16:41:00 Polymorphism in PHP5 is a technique where the function to be called is detected based on the class object calling it at runtime. The basis of Polymorphism is Inheritance and function overridden. Example - Basic Polymorphism < ? class BaseClass { public function myMethod() { ...
By: Techie Zone
Give an example where upcasting takes advantage of polymorphism.
2007-10-08 10:48:00 Here it goes:class Parent { }class Child extends Parent { }Child can be referred as an object of type Parent or Child.Upcasting works like this:Child aChildObj = new Child();Parent aParentObj = (Parent)aChildObj;As aChildObj can be referred to by the class names Child andParent,you can say that this upcasting and type extension is theimplementation of polymorphism in Java.
Practical Example of Using Virtual Functions II
2007-08-13 09:16:00 From the past few articles we have been discussing about Virtual Functions. Before taking up another topic for discussion I thought of providing one more example of how and when virtual functions may be used. So, here it is, a practical example of virtual function. As virtual functions and Run-Time Polymorphism goes hand-in-hand so the example here may also serve as an example of the use of run-time polymorphism. // Example to illustrate // the use of virtual functions // and run-time polymorphism #include <iostream.h> // -- SORT CLASS -- class sort { protected: int *arr; int num_elmnt; public: sort(int); ~sort(); void get_elmnt(); void show_elmnt(); virtual void do_sorting()=0; }; // takes an argument // which is the number of // elements we want sort::sort(int x) { num_elmnt=x; arr=new int[num_elmnt]; } sort::~sort() { // free up he allocated memory delete []arr; } vo...
Properties of Pure Virtual Functions
2007-08-11 15:51:00 In the article Properties of Virtual Functions, we discussed about two properties of virtual functions in detail. In this article we’ll be discussing about some properties of Pure Virtual Functions. Property #1: We know that a base class can’t define a pure virtual function and at the same time its derived class must define it. But what if the derived class is used as base for deriving yet another class; is this possible? Yes, it is, as is obvious from the following program: #include <iostream.h> // base class class base { public: // pure virtual function // declaration virtual void func() = 0; }; // derived class class derived1 : public base { public: // must define void func() { cout<<"Derived1's func() "; } }; // derived from class derived1 class derived2 : public derived1 { public: void func() { cout<<"Derived2's func() "; ...
Virtual Functions and Run-time Polymorphism
2007-08-06 15:41:00 Before beginning this I would like to tell you one thing through the following program: // Virtual Functions and // Run-time Polymorphism #include <iostream.h> // base class class base { public: int a; }; // derived class class derived:public base { public: int b; }; // main void main() { base b; derived d; // base class pointer base *bptr; // pointer pointing // to base's object bptr=&b; bptr->a=10; // pointer pointing // to derived's object bptr=&d; // still is able to access // the members of the base // class bptr->a=100; } The property above combined with virtual function can be used to achieve a very special and powerful feature, known as run-time polymorphism. We had discussed about What is Polymorphism before so we wont be discussing it here. The program below illustrates how virtual functions can be used to achieve run-time pol...
What is Polymorphism?
2007-07-28 15:37:00 Polymorphism means to have one interface for different methods or functions. It is the ability through which we can do different operations (by calling different functions) from the same interface. In C++ functions and operators can be made to be polymorphic, but in this article we’ll only be discussing about polymorphic functions. There can be two types of polymorphism which are discussed below: Compile-Time Polymorphism: When we have two or more polymorphic function (overloaded functions) and the call to a particular function is resolved (or known) at the compile-time, it is called compile-time polymorphism. The following example program illustrates this. Please read the comments for further information. // program to demonstrate // compile-time polymorphism #include<iostream.h> // -- FUNCTION PROTOTYPES -- // -- OVERLOADED FUNCTIONS -- void func(int); void func(char *); // -- ENDS -- void main() { ...
A Multi-Purpose String Class in C++
2007-06-22 09:27:00 NOTE: Here I present you with a String Class in C++. We have pre-defined string class (CString in Microsoft Visual C++) which has similar but more powerful to the one presented here but using something is one thing and learning how it works is another. Here I show you how string functions actually work. All the functions are programmed from the scratch without using any other standard library function. Look at the program (Class) carefully and try to understand how each of the function is working. //------------------------------ //-----------myClass------------ //----A String Class in C++---- #include<iostream.h> #include<stdlib.h> class myString { private: // these functions are not // needed outside the class void allocate(int); void copy(char *, char *); public: char *string; // member functions myString(); myString(char *); int getLength(); int getLength(char *); void empty(); bool isEmpty(); void putStr...
The 3111t/c polymorphism of the clock gene confers a predisposition to a li
2007-05-23 04:05:00 Feeding is subjected to circadian regulation; therefore, changes in the components of the endogenous oscillator regulating circadian rhythms may be involved in disordered rhythmicity of eating behavior as it occurs in anorexia nervosa (AN) and bulimia nervosa (BN). We investigated whether the 3111T/C polymorphism of the CLOCK gene, which is part of the endogenous oscillator ...
Mental Retardation and Cancer CNVs Polymorphisms Germ-line Mutations/ Pater
2007-05-15 23:30:00 Researchers Determine Genetic Causes of Mental RetardationMarco Marra of the University of British Columbia and Lisa Lit of the University of California, Davis, discuss chromosome copy number in mental retardation. VANCOUVER, Canada, December 11, 2006 — University of British Columbia scientists, led by Marco Marra and Jan Friedman, have identified chromosomal abnormalities—genetic duplications and deletions as small as 37.6 kb—that are responsible for the development of mental retardation in children. Using whole-genome sampling analysis (WGSA) with Affymetrix Mapping 100K Arrays, the researchers pinpointed the probable genetic causes of mental retardation in at least twice as many children as conventional cytogenetic analysis, and were able to detect smaller abnormalities than can be detected using BAC-tiling-path arrays. The researchers examined 100 children and their unaffected parents; each of the children had been assessed by clinical geneticists who were unable to identi...
Role of the comt gene val158met polymorphism in mental disorders: a review.
2007-05-14 15:05:00 Related Articles Role of the COMT gene Val158Met polymorphism in mental disorders: A review. Eur Psychiatry. 2007 Apr 5; Authors: HosГЎk L The Val158Met polymorphism of the COMT gene is functional, easily detectable, and significantly related to metabolism of catecholamines, which underlie pathogenesis of a significant number of mental disorders. Evidence for the role of this polymorphism in schizophrenia, substance dependence, bipolar disorder, obsessive-compulsive disorder, anorexia nervosa and attention deficit hyperactivity disorder is summed up in this review article. The results make it unlikely that the COMT gene plays an important role in these mental disorders, although a minor effect can not be excluded. Future studies on the COMT gene in mentally ill subjects should be stratified by clinical subtypes of the disorder, gender and ethnicity. Studies of endophenotypes instead of the complex disorder seem to be another promising research strategy. Gene-gene and gene-envir...
Dynamics of polymorphism in a malaria vaccine antigen at a vaccine-testing
2007-03-28 06:03:00 Christopher Plowe and colleagues surveyed local malaria parasites for genetic diversity in MSP-1, a candidate vaccine antigen. These data are needed to interpret population responses to MSP-1-based vaccines during trials planned at this site. (Source: PLoS Medicine) More: continued here |
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