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Programming tutorials

Showing tutorials 460 to 480 out of 533 Programming tutorials.

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Reference types provide excellent flexibility and performance of large structures  This is the reason that classes are reference types and structs are data value types  As you will probably know  reference types do not store the actual value of the object but a pointer to a memory location  This pointer is stored on the stack  whereas the object itself is located in the managed heap

Reference Data Types

Reference types provide excellent flexibility and performance of large structures. This is the reason that classes are reference types and structs are data value types. As you will probably know, reference types do not store the actual value of the object but a pointer to a memory location. This pointer is stored on the stack whereas the object itself is located in the managed heap.

Not yet rated with 543 hits  Added on: Sep 12, 2008

Structs  similar to classes  are used to define various objects in your code  They are stored on the stack  rather than in the managed heap  This means that they are value type objects and thus  when you pass a struct as a parameter in a function  a copy of the object is actually passed to that function  This can affect the performance of your code if you use structs for large objects  However  since the  Net does not bring in the managed heap  structs are more suitable for small objects of limited functionality and with no inheritance capabilities

Working with Structs in C#

Structs, similar to classes, are used to define various objects in your code. They are stored on the stack, rather than in the managed heap. This means that they are value-type objects and thus, when you pass a struct as a parameter in a function, a copy of the object is actually passed to that function. This can affect the performance of your code if you use structs for large objects. However, since the .Net does not bring in the managed heap, structs are more suitable for small objects of limited functionality and with no inheritance capabilities.

Not yet rated with 487 hits  Added on: Sep 12, 2008

C  distinguishes between two  2  different data types categories  value and reference types  Value data types directly store their value while reference data types store a reference to their value  Value types are stored on the stack whereas reference types are stored on the managed heap

Value Data Types in C#

C# distinguishes between two (2) different data types categories: value and reference types. Value data types directly store their value while reference data types store a reference to their value. Value types are stored on the stack whereas reference types are stored on the managed heap.

Not yet rated with 508 hits  Added on: Sep 12, 2008

The string class is designed specifically for storing and manipulating strings  Some operations of this class include conversion to lower or uppercase  removal of leading and trailing whitespace  replacing characters  comparing two strings and more  Also  a ToString   method is inherited to every object in C   making available a string conversion of any object  Of course  this method can be overridden in your classes so that you can define the process in which this conversion takes place

Working with Strings in C#

The string class is designed specifically for storing and manipulating strings. Some operations of this class include conversion to lower or uppercase, removal of leading and trailing whitespace, replacing characters, comparing two strings and more. Also, a ToString() method is inherited to every object in C#, making available a string conversion of any object. Of course, this method can be overridden in your classes so that you can define the process in which this conversion takes place.

Not yet rated with 563 hits  Added on: Sep 12, 2008

C  provides several mechanisms for flow control in a program   The loops in C  allow you to execute a block of code repeatedly  until a certain condition is met  This condition can be the number of repetition  a variable taking a specified value or something completely different  The for loop allows you to repeatedly execute a block of code for a specified number of times

FOR Loops in C#

C# provides several mechanisms for flow control in a program. The loops in C# allow you to execute a block of code repeatedly, until a certain condition is met. This condition can be the number of repetition, a variable taking a specified value or something completely different. The for loop allows you to repeatedly execute a block of code for a specified number of times.

Not yet rated with 499 hits  Added on: Sep 12, 2008

Functions are a must for modern object oriented programming and for visual programs as well  When you click a button on your mouse an event is generated  This event fires a function that is linked to that particular event  Therefore  you need to define several functions that correspond to various actions your code should perform  They are also useful when you need to call a block of code many times in different parts of your program

Functions in C#

Functions are a must for modern object oriented programming and for visual programs as well. When you click a button on your mouse an event is generated. This event fires a function that is linked to that particular event. Therefore, you need to define several functions that correspond to various actions your code should perform. They are also useful when you need to call a block of code many times in different parts of your program.

Not yet rated with 502 hits  Added on: Sep 12, 2008

A significant advantage of C  when compared to C   is the memory management capabilities of the C   The programmer need not worry about memory management  the garbage collector is assigned this operation on the programmer s behalf  You will probably know that value data types are stored on the stack while reference data types are stored on the managed heap  The stack stores data value types that are not members of objects  Also  in C  it is always the case that if variable a goes into scope before variable b  then b will go out of scope first  For example  if you declare some variables in a method  these variables will go out of scope when the method ends   However  it maybe sometimes that you need to keep these variables long after the method function ended  This happens for all data declared with the new operator  the reference types  All reference types are stored in the managed heap  which is under the control of garbage collector

Garbage Collection in C#

A significant advantage of C# when compared to C++ is the memory management capabilities of the C#. The programmer need not worry about memory management; the garbage collector is assigned this operation on the programmer’s behalf. You will probably know that value data types are stored on the stack while reference data types are stored on the managed heap. The stack stores data value types that are not members of objects. Also, in C# it is always the case that if variable a goes into scope before variable b, then b will go out of scope first. For example, if you declare some variables in a method, these variables will go out of scope when the method ends. However, it maybe sometimes that you need to keep these variables long after the method/function ended. This happens for all data declared with the new operator, the reference types. All reference types are stored in the managed heap, which is under the control of garbage collector.

Not yet rated with 570 hits  Added on: Sep 12, 2008

The if statement is a so called conditional statement  It allows you to branch your code depending on whether certain conditions are met or not  C  has two such conditional statements  the if statement and the switch statement  In this tutorial we will talk about the if statement  a frequent element of all programs

The IF Statement in C#

The if statement is a so-called conditional statement. It allows you to branch your code depending on whether certain conditions are met or not. C# has two such conditional statements, the if statement and the switch statement. In this tutorial we will talk about the if statement, a frequent element of all programs.

Not yet rated with 512 hits  Added on: Sep 12, 2008

In this tutorial introduce you to the concept of Classes and Objects in PHP  To put it simply  an Object in the context of programming languages is a data structure which can contain any number of variables and functions all held together under a Class name  This Class can then be created in the normal scope of the code and stored inside a new variable  and multiple copies of this same class can be created  This allows for an even greater level of code encapsulation  allowing more complexity to be accessed from simple commands

Classes and Object-Oriented Programming in PHP

In this tutorial introduce you to the concept of Classes and Objects in PHP. To put it simply, an Object in the context of programming languages is a data structure which can contain any number of variables and functions all held together under a Class name. This Class can then be created in the normal scope of the code and stored inside a new variable, and multiple copies of this same class can be created. This allows for an even greater level of code encapsulation, allowing more complexity to be accessed from simple commands.

Rated:*** with 793 hits  Added on: Sep 06, 2008

When developing more complex PHP sites  especially forums  discussion boards and blogs where date and time functions are important  you ll regularly encounter situations where you need to display and manipulate values based around the current date and time  PHP includes a range of functions which can help you to easily format and adjust your date and time displays to suit your needs  In this tutorial  we ll look at some easy ways to display calendar information for your visitors

Working with dates and times in PHP

When developing more complex PHP sites, especially forums, discussion boards and blogs where date and time functions are important, you’ll regularly encounter situations where you need to display and manipulate values based around the current date and time. PHP includes a range of functions which can help you to easily format and adjust your date and time displays to suit your needs. In this tutorial, we’ll look at some easy ways to display calendar information for your visitors.

Rated:**** with 759 hits  Added on: Sep 06, 2008

This tutorial shows how to Avoid the  Permission denied in  IIS while installing a php script or running your own script  This tutorial has step  by step instruction with screen shots of how to change read  write  execute permission on scripts  This will help you to avoid write permission errors for script installation  thumbnail script  image manipulation script   file handling script etc

Setting write permission on files in IIS/Windows

This tutorial shows how to Avoid the "Permission denied in" IIS while installing a php script or running your own script. This tutorial has step by step instruction with screen shots of how to change read, write, execute permission on scripts. This will help you to avoid write permission errors for script installation, thumbnail script, image manipulation script , file handling script etc.

Rated:*** with 883 hits  Added on: Aug 29, 2008

Tutorial on how to use PHP and MySQLi   MySQLi stands for MySQL Improved and is a faster  more reliable method of connection

PHP MySQL Improved

Tutorial on how to use PHP and MySQLi. MySQLi stands for MySQL Improved and is a faster, more reliable method of connection.

Rated:*** with 872 hits  Added on: Jun 30, 2008

An example of how to create a fluent array and string library in PHP

Fluent Arrays and Strings in PHP

An example of how to create a fluent array and string library in PHP.

Rated:*** with 884 hits  Added on: Jun 23, 2008

How to use array multisort to sort tables by column

Sorting 2D-arrays in PHP

How to use array_multisort to sort tables by column.

Rated:*** with 910 hits  Added on: Jan 06, 2008

How to on building a feed reader with the Zend Framework  Smarty and HTML Ajax

Ajax, ZF and Smarty feed reader: part 1

How to on building a feed reader with the Zend Framework, Smarty and HTML Ajax.

Rated:*** with 906 hits  Added on: Nov 11, 2007

Feed reader with the Zend Framework  Smarty and HTML Ajax  The registration window

Ajax, ZF and Smarty feed reader: part 2

Feed reader with the Zend Framework, Smarty and HTML Ajax: The registration window.

Rated:*** with 820 hits  Added on: Nov 11, 2007

In this part we take a look at user registration  login and validation

Writing a CMS/Community with Smarty and the Zend Framework Part 4

In this part we take a look at user registration, login and validation.

Rated:*** with 832 hits  Added on: Nov 09, 2007

The second part in a series on how to write a combination of a CMS and community with the Zend Framework and the Smarty templating system

Writing a CMS/Community with Smarty and the Zend Framework Part 2

The second part in a series on how to write a combination of a CMS and community with the Zend Framework and the Smarty templating system.

Rated:*** with 828 hits  Added on: Nov 02, 2007

This tutorial describes how to use the Smarty templating engine and the Zend Framework in order to create easily portable widgets

Widgets with the Zend Framework and Smarty

This tutorial describes how to use the Smarty templating engine and the Zend Framework in order to create easily portable widgets.

Rated:*** with 891 hits  Added on: Oct 27, 2007

This tutorial describes what to do in order to be able to instantiate controllers in the Zend Framework  the goal is to be able to make instances of them in order to handle Ajax requests

Marrying the Zend Framework and HTML Ajax

This tutorial describes what to do in order to be able to instantiate controllers in the Zend Framework, the goal is to be able to make instances of them in order to handle Ajax requests.

Rated:*** with 1425 hits  Added on: Oct 24, 2007

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This tutorial shows you how to create 3D flash photo gallery using 3rd flash tool called Wondershare Flash Gallery Factory  Easy to make 3D flash gallery with pre designed free templates and no flash or XML skills needed

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In this tutorial  we will try to make a Snowy Mountain scene in 3dsmax  We will work with several types of Materials Maps in the tutorial frequently  Follow the below link for more details

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This tutorial will show you the basics of 3d design with photoshop     You can implement those in your logo designs

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