OBJECT ORIENTED PROGRAMMING CONCEPTS USING C PDF

In this chapter you will learn about the following: Design as a series of design decisions; various approaches and types of design, including top-down design starting with the architecture, and bottom-up design starting with utilities; design principles that lead to maintainable software, such as ‘d[r]

}Because you’ve implemented the Iterator interface you can traverse your result set using a foreach loop. The while loop above is now replaced by this:foreach($rs as $row ){ echo $row[0]." - ".$row[1]; echo "<br />\n";}As you can see, it is more difficult to implement the Iterat[r]

OOPHP_02.book Page 111 Friday, May 5, 2006 2:25 PM112 Chapter 13no intrinsic need for this method to be magic. For example, in Java, construc-tors bear the name of the class with no serious negative consequences. On the other hand, destructors are a necessity and would seem to have to be magic. They[r]

Figure 12-1.Figure 12-1: Search resultsThere are hyperlinks to the pages where the search criterion was found, along with snippets of text surrounding this criterion. Within the snippet of text the criterion is bolded. As already mentioned, this is not the solution for a high-traffic site where many[r]

passed to the doSomething function will implement the sing method. The declaration of an abstract sing method ensures that you can’t have a bird that doesn’t sing and the type hint ensures that only a bird may be passed to this function. NOTE Type hinting is optional in all situations except catch b[r]

__toString method is not defined, you’ll see something like Object id#3. Because objects are composite, that is, they are made up of a number of data members and methods, it is not readily apparent what the string representation of an object should be. The __toString method was introdu[r]

DirectoryItems class—after all, as you learned in Chapter 5, this class is similar to a database table.Using What You KnowPursuing this line of thought, you need to:Filter and order recordsKnow the total number of recordsBe able to extract sequential subsets of the totalOOPHP_02.book Page 65[r]

}A different font style and size are appropriate for displaying the current page and the total page count (page 3 of 6, as shown in Figure 8-1). Increased padding at the top separates the page number display from the navigator proper, which improves readability.You’ll make the anchor tags within yo[r]

CREATING DOCUMENTATION USING THE REFLECTION CLASSESIn Chapter 4, I introduced a simple class called DirectoryItems. You may remember what it does, but you probably can’t remem-ber the specific methods. With a user-defined class, looking up forgotten methods usually means rooting through the c[r]

unlike MySQL, SQLite does not escape characters by using a backslash; you must use the sqlite_escape_string function instead. There is no OO method for doing this.There is no requirement to call the cleanData method, and there may be situations where its use is not appropriate—perhaps where s[r]

In this chapter, we look at how to model system dynamics, focusing on two aspects: interactions and behavior. An interaction model shows a set of actors and objects interacting by exchanging messages. A behavior model shows how an object or system changes state in reaction to a series of events.

In the previous chapter, we looked at UML class diagrams. This chapter continues the study of the static view of software by looking at typical patterns found in class diagrams. These patterns recur in many designs; by learning and using them you are reusing the collective experience of many softwar[r]

In the previous chapter, we looked at UML class diagrams. This chapter continues the study of the static view of software by looking at typical patterns found in class diagrams. These patterns recur in many designs; by learning and using them you are reusing the collective experience of many softwar[r]

magic method, 28DSN (Data Source Name), for an SQLite database, 159dynamic method calling statically, 96OOPHP_02.book Page 181 Friday, May 5, 2006 2:25 PM182 INDEXEEckel, Bruce, 27empty function, 161encapsulation, 12, 19, 112, 113, 122erratic behavior of a class, 52errorhandling. See error trappingm[r]

different method signatures.)override The act of redefining the method of a parent class in a child classPparent class See base class.PHP Data Object (PDO) A group of classes that provides a data-access abstraction layer, included by default with PHP version 5.1 and higher; drivers are availa[r]

You will also have to add an application type to your configuration file. The example below will process files with the extensions .php or .inc as PHP files.AddType application/x-httpd-php .php .incComprehensive instructions for installing and configuring Apache under Windows can be found at http://[r]

Warning: SQLiteDatabase::query() [function.query]: cannotmodify specific_link because it is a view We solved this problem in the trigger we created on the view specific_link shown in Listing 15-3. Because we used an INSTEAD OF clause, any attempt to delete from this view instead removes the appropri[r]

getDocComment() . "</p>\n"; }Because creating an instance may throw a ReflectionException, you enclose your call to the constructor within a try block. You need to know which class we are documenting, so you display the class name by calling the inherited method getName. Knowing whe[r]

Chapter 2: Basics of Object-Oriented Programming 5Chapter 3: Object-Oriented Features New to PHP 5 11Chapter 4: Show a Little Class 17Chapter 5: Mod UR Class 25Chapter 6: The ThumbnailImage Class 35Chapter 7: Building the PageNavigator Class 47Chapter 8: Using

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