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Learn about assignment compatibility, type conversion, and casting for both primitive and reference types. Also learn about the relationships among reference types, method invocations, and the location in the class hierarchy where a method is defined.

Revised: Fri May 06 14:33:08 CDT 2016

This page is part of a Book titled XNA Game Studio .

Table of Contents

Preface

This module is one in a collection of modules designed primarily for teaching GAME 1343 Game and Simulation Programming I at Austin Community College in Austin, TX. These modules are intended tosupplement and not to replace the textbook.

An earlier module titled Getting Started provided information on how to get started programming with Microsoft's XNA Game Studio.

Object-oriented programs exhibit three main characteristics:

  • Encapsulation
  • Inheritance
  • Polymorphism

I have explained encapsulation, inheritance, and compile-time polymorphism in earlier modules. Before I can explain runtime polymorphism, however, I need tostep back and explain some concepts involving type conversion, casting, and assignment compatibility.

Viewing tip

I recommend that you open another copy of this module in a separate browser window and use the following links to easily find and view the Listings while you are reading about them.

Listings

General background information

Type conversion

This module explains type conversion for both primitive and reference types.

Assignment compatibility

A value of a particular type may be assignment-compatible with a variable of another type. If so, the value can be assigned directly to the variable.

Questions & Answers

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Assiatu Reply
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William Reply
They formed in two ways first when one sperm and one egg are splited by mitosis or two sperm and two eggs join together
Oluwatobi
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Josephine Reply
Genetics is the study of heredity
Misack
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Misack
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Hassan Reply
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Joseph Reply
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the study of living organisms and their interactions with one another and their environments
AI-Robot
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Wine
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Joseph Reply
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Shaker Reply
list any five characteristics of the blood cells
Shaker
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Abdullahi
is like gone fail us
DENG
cells is the basic structure and functions of all living things
Ramadan
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ISCONT Reply
is organisms that are similar into groups called tara
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Kenna Reply
A scanning electron microscope (SEM) is ideal for situations requiring high-resolution imaging of surfaces. It is commonly used in materials science, biology, and geology to examine the topography and composition of samples at a nanoscale level. SEM is particularly useful for studying fine details,
Hilary
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Condoleezza Reply
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Diversity of living thing
ISCONT
what is cell division
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AI-Robot
What is life?
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Source:  OpenStax, Xna game studio. OpenStax CNX. Feb 28, 2014 Download for free at https://legacy.cnx.org/content/col11634/1.6
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