The quality of software, not only depends on its architecture and project management, but also is closely related with the code's quality. Bad, untidy code can run normally to some extent, but that will bring potential obstacles to the whole development team, as sure as a gun. As a result, that will greatly increase development time, resources and other costs. This same applies to both agile software development and traditional software development.

Eloquent JavaScript is a free book written by Marijn Haverbeke (a world-class programmer who has accumulated rich experience in web development and is especially influential in the field of JavaScript), which has always been strongly recommended by the father of JavaScript and many JavaScript experts. This Second Edition expanded a lot of new content based on its first Edition (the chapters also increased to 22 from 12).

AppNee believes that many wise ideas and thoughts in Programming Pearls can still make many programmers benefit a lot even after decades of years. In Programming Pearls, 2nd Edition, Jon Bentley thoroughly updated most of material in the first edition, and rewrote all the original example programs.

WPF (Windows Presentation Foundation) provides a complete development framework for building apps with high-quality user interface on Windows. This also gives an unprecedented opportunity to you to make full use of the processing ability of Windows computer.

If want to thoroughly understand something, you have to learn its history first. How did it start? How to develop? How to become what it is today? In the end, it may be traced to a certain philosophy that adapts to various backgrounds in that era. Like guys learning art have to study the art history, similarly, in order to searchingly study programming, understand a computer language in-depth, we should go to learn how one language grew out of nothing.