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 best open resource framework for cross-platform improvement: Qt four.

An advent to layout styles in C++ with Qt 4 is an entire instructional and reference that assumes no past wisdom of C, C++, items, or styles. you will stroll via each middle proposal, one step at a time, studying via an intensive choice of Qt 4.1-tested examples and routines.

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

  • Learn gadgets speedy: periods, inheritance, polymorphism, and more
  • Master robust layout styles
  • Discover effective high-level programming options utilizing libraries, generics, and containers
  • Build graphical functions utilizing Qt widgets, types, and views
  • Learn complex ideas 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 info for An Introduction to Design Patterns in C++ with Qt 4

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6). 14. Reference Variables We observed earlier that an object (in the most general sense) is a contiguous region of storage. An lvalue is an expression that refers to an object. Examples of lvalues are variables, array cells, and dereferenced pointers. In essence, an lvalue is anything with a memory address that can be given an alternate name. By contrast, temporary or constant expressions such as i+1 or 3 are not lvalues. In C++, a reference provides a mechanism for assigning an alternative name to an lvalue.

Because the subobjects are strictly part of the parent object and cannot possibly exist as stand-alone objects, we could use the composition relationship. 2 shows, the filled-in diamond indicates that the object on that side is composed (partially) of the object(s) from the other side of the relationship. 2. 6. Friends of a Class Now that we know about accessibility rules, we need to know how to break them occasionally. The friend mechanism makes it possible for a class to allow non-member functions to access its private data.

14. Reference Variables We observed earlier that an object (in the most general sense) is a contiguous region of storage. An lvalue is an expression that refers to an object. Examples of lvalues are variables, array cells, and dereferenced pointers. In essence, an lvalue is anything with a memory address that can be given an alternate name. By contrast, temporary or constant expressions such as i+1 or 3 are not lvalues. In C++, a reference provides a mechanism for assigning an alternative name to an lvalue.

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