An Introduction to Design Patterns in C++ with Qt 4 by Alan Ezust

By Alan Ezust

Learn C++, styles, and Qt four Cross-Platform Development

Master C++ and layout styles jointly, utilizing the world's top open resource framework for cross-platform improvement: Qt four.

An creation to layout styles in C++ with Qt four is an entire educational and reference that assumes no prior wisdom of C, C++, gadgets, or styles. you will stroll via each middle suggestion, one step at a time, studying via an intensive selection of Qt 4.1-tested examples and routines.

By the time you are performed, you can be growing multithreaded GUI functions that entry databases and control XML files--applications that run on structures together with home windows, Linux, Unix, and Mac OS X. better of all, you may be writing code that is effective, reusable, and stylish.

  • Learn items quickly: periods, inheritance, polymorphism, and more
  • Master strong layout styles
  • Discover effective high-level programming innovations utilizing libraries, generics, and containers
  • Build graphical purposes utilizing Qt widgets, versions, and views
  • Learn complex suggestions starting from multithreading to reflective programming
  • Use Qt's integrated sessions for getting access to MySQL data
  • Includes a whole C++ language reference

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Extra resources for An Introduction to Design Patterns in C++ with Qt 4

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4. C++ compilers allow you to omit "int" from short int,long int, and unsigned int. You can omitsigned from most types, since that is the default. Since the range of values for a particular type depends on the underlying architecture of the machine on which the compiler is running, the ANSI/ISO standard for C++ does not specify the size (in bytes) of any of these types. 2. 2. Simple Types Hierarchy Byte/char types Integral types Floating point types bool short int float char int double signed char long int long double unsigned char unsigned short wchar_t unsigned int unsigned long There is a special operator sizeof() that returns the number of chars[12] that a given expression requires for storage.

Dereferencing a null or uninitialized pointer causes a run-time error, usually a segmentation fault or, in Windows, a General Protection Fault (GPF). It is the responsibility of the programmer to make sure that no attempt is made to dereference a null or uninitialized pointer. We will discuss techniques to ensure that such errors are avoided. 19. 19 is executed on different machines. The variable x accesses its data directly , but the variable px accesses the same data indirectly. This is why the word indirection is often used to characterize the process of accessing data through a pointer.

Identifiers, Types, and Literals Identifiers are names that are used in C++ programs for functions, parameters, variables, constants, classes, and types. An identifier consists of a sequence of letters, digits, and underscores that does not begin with a digit. An identifier cannot be a reserved keyword. See Appendix A for a list of them. The standard does not specify a limit to the length of an identifier, but certain implementations of C++ only examine the first 31 characters to distinguish between identifiers.

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