5.0 von 5 Sternen
The Best Introductory Book on the Market, 6. Januar 2000
Rezension bezieht sich auf: Elements of Programming with Perl (Taschenbuch)
'Elements of Programming with Perl' by Andrew Johnson is simply the best introductory Perl book on the market. It is patient in pace and rich in content. Concepts are introduced and explained in error free code. Diagrams are effectively utilized to reinforce understanding.
Having read Larry Wall's 'Programming Perl' and Tom Christiansen's 'Learning Perl' I was already acquainted with the basic constructs of the language. However as Perl is my first programming language I lacked the skills necessary to write effective reusable programs. 'Elements of Programming with Perl' early on presented the process of program design, and reinforced good design practice through well-organized code examples presented throughout all of the topical chapters.
Each chapter builds on & reinforces topics presented in previous chapters. I often found myself reading about a function I had been introduced to elsewhere, and upon following the book's example code finally discovering it's practical potency. As an example, prior to reading this book I had been capable of sorting lists of hostnames by domain only by inefficiently using a regular expression to copy the domain & pre-pend it to the beginning of the hostname. Then using the default 'sort' function followed by a loop to discard the pre-pended domain. Now I can tailor the sort function to serve my needs efficiently replacing that tangle of code with just three lines.
The book is well written with few wasted words and unlike most other authors this one understands & makes an effort to teach users of Active State Perl on Windows platforms as well as those using MacPerl. There are no sections or examples exclusive to Unix.
It is refreshing to work through and use examples that are not devoted to system administrative tasks. The chapter on module use demonstrates fetching web pages through code that retrieves stock quote and trade volume information and then graphically charts the data. How much more practical & timely can an example be?
The author makes himself available online, responds to questions, patiently reviews code and politely makes suggestions.
My tool bag now full, my understanding thorough I highly recommend this book.
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