Part II describes advanced programming techniques that support sophisticated applications. The Tcl interfaces remain simple, so you can quickly construct powerful applications.
Chapter 10 describes eval, which lets you create Tcl programs on the fly. There are tricks with using eval correctly, and a few rules of thumb to make your life easier.
Chapter 11 describes regular expressions. This is the most powerful string processing facility in Tcl. This chapter includes a cookbook of useful regular expressions.
Chapter 12 describes the library and package facility used to organize your code into reusable modules.
Chapter 13 describes introspection and debugging. Introspection provides information about the state of the Tcl ...