Hands-On High Performance Programming with Qt 5

Deep Dive into C++ and Performance

In this chapter, we will take a closer look at Qt's underlying language and its standing in the matter of performance. We will look at the design philosophy of C++, some problematic and some good features, and the impact the recent C++ standard updates have had on program optimization. We will also discuss what compilers and other tools can do for program performance.

The topics that will be covered are as follows:

• C++ philosophy—what were Bjarne's guidelines when designing C++
• Traditional C++ optimizations—the basics we have always done
• C++11/14/17 and performance—what performance nuggets are hidden there
• What your compiler can do for you—a lot, you'd be surprised
• Optimization tools beyond compiler—