Elements of Programming With Perl

by Johnson, Andrew L.

• ISBN13: 9781884777806
• ISBN10: 1884777805
• Format: Paperback
• Copyright: 1999-09-01
• Publisher: Manning Pubns Co

Summary

Elements of Programming with Perl is a general introduction to programming, using Perl as the implementation language. It starts at the beginning, teaching programming style, structure, and design. It covers all the fundamental elements of Perl (e.g., pattern matching and text processing) and proceeds to advanced concepts, including modular programming, abstract data structures, and object oriented programming.

Table of Contents

preface	xi	(4)
acknowledgments	xv
Part I Introductory elements	3	(56)
1 Introduction	3	(15)
1.1 On programming	4	(3)
1.2 On Perl	7	(8)
Getting started	10	(1)
Running Perl	11	(1)
Getting help	12	(3)
1.3 A bigger picture	15	(3)
2 Writing code	18	(14)
2.1 Structure	20	(1)
2.2 Naming	21	(3)
2.3 Comments	24	(5)
2.4 Being strict	29	(2)
2.5 A quick style guide	31	(1)
3 Writing programs	32	(27)
3.1 A first program	34	(15)
Specification	34	(1)
Design	35	(5)
Coding	40	(5)
Testing and debugging	45	(2)
Maintenance	47	(2)
3.2 faqgrep	49	(6)
3.3 Exercises	55	(4)
Part II Essential elements	59	(124)
4 Data: types and variables	59	(19)
4.1 Scalar data	60	(5)
Scalar variables	63	(2)
4.2 Expressions	65	(2)
4.3 List data	67	(6)
Array variables	69	(2)
Hash variables	71	(2)
4.4 Context	73	(1)
4.5 References to variables	74	(2)
4.6 Putting it together	76	(1)
4.7 Exercises	77	(1)
5 Control structures	78	(20)
5.1 Selection statements	80	(4)
5.2 Repetition: loops	84	(5)
5.3 Logical operators	89	(3)
5.4 Statement modifiers	92	(1)
5.5 Putting it together	92	(5)
5.6 Exercises	97	(1)
6 Simple I/O and text processing	98	(23)
6.1 File handles	99	(4)
6.2 Pattern matching	103	(10)
Matching constructs	105	(2)
Regex language constructs	107	(5)
Matching and substitution operators	112	(1)
6.3 Split and join	113	(1)
6.4 The DATA file handle	114	(2)
6.5 Putting it together	116	(4)
6.6 Exercises	120	(1)
7 Functions	121	(20)
7.1 Scope	123	(4)
7.2 Global variables	127	(1)
7.3 Parameters	127	(2)
7.4 Return values	129	(2)
7.5 Designing functions	131	(3)
7.6 Parameters and references	134	(1)
7.7 Recursion	135	(2)
7.8 Putting it together	137	(3)
Revisiting the mathq program	137	(2)
Routine examples	139	(1)
7.9 Exercises	140	(1)
8 References and aggregate data structures	141	(19)
8.1 Creating references	143	(7)
Nested or multi-dimensional arrays	147	(2)
Nested hashes	149	(1)
Mixed structures	149	(1)
8.2 Scope and references	150	(2)
8.3 References to functions	152	(3)
Closures	153	(2)
8.4 Nested structures on the fly	155	(3)
8.5 Review	158	(1)
8.6 Exercises	159	(1)
9 Documentation	160	(23)
9.1 User documentation and POD	161	(3)
9.2 Source code documentation	164	(6)
Other uses of LP	169	(1)
9.3 Tangling code	170	(8)
A simple tangler	170	(8)
9.4 Further resources	178	(5)
Part III Practical elements	183	(88)
10 Regular expressions	183	(19)
10.1 The basic components	184	(4)
10.2 The character class	188	(3)
Search and replace: capitalize headings	189	(2)
Character class shortcuts	191	(1)
10.3 Greedy quantifiers: take what you can get	191	(1)
10.4 Non-greedy quantifiers: take what you need	192	(1)
10.5 Simple anchors	193	(2)
10.6 Grouping, capturing, and backreferences	195	(3)
Prime number regex	196	(2)
10.7 Other anchors: lookahead and lookbehind	198	(3)
Inserting commas in a number	198	(3)
10.8 Exercises	201	(1)
11 Working with text	202	(12)
11.1 The match operator	203	(4)
Context of the match operator	206	(1)
11.2 The substitution operator	207	(1)
11.3 Strings within strings	208	(3)
11.4 Translating characters	211	(1)
11.5 Exercises	212	(2)
12 Working with lists	214	(11)
12.1 Processing a list	215	(2)
12.2 Filtering a list	217	(1)
12.3 Sorting lists	217	(4)
12.4 Chaining functions	221	(2)
12.5 Reverse revisited	223	(1)
12.6 Exercises	224	(1)
13 More I/O	225	(9)
13.1 Running external commands	226	(1)
13.2 Reading and writing from/to external commands	227	(1)
13.3 Working with directories	228	(1)
13.4 Filetest operators	229	(1)
13.5 faqgrep revisited	230	(3)
13.6 Exercises	233	(1)
14 Using modules	234	(22)
14.1 Installing modules	236	(1)
14.2 Using modules	237	(1)
14.3 File::Basename	238	(1)
14.4 Command line options	239	(2)
14.5 The dating game	241	(2)
14.6 Fetching webpages	243	(6)
Stock quotes and graphs	243	(6)
14.7 CGI.pm	249	(4)
14.8 Reuse, don't reinvent	253	(2)
14.9 Exercises	255	(1)
15 Debugging	256	(15)
15.1 Debugging by hand	257	(5)
15.2 The Perl debugger	262	(9)
Part IV Advanced elements	271	(62)
16 Modular programming	271	(9)
16.1 Modules and packages	272	(2)
16.2 Making a module	274	(4)
16.3 Why make modules?	278	(1)
16.4 Exercises	279	(1)
17 Algorithms and data structuring	280	(12)
17.1 Searching	281	(2)
17.2 Sorting	283	(3)
17.3 Heap sort	286	(5)
17.4 Exercises	291	(1)
18 Object-oriented programming and abstract data structures	292	(23)
18.1 What is OOP?	293	(2)
18.2 OOP in Perl	295	(6)
The basics	295	(4)
Inheritance	299	(2)
18.3 Abstract data structures	301	(1)
18.4 Stacks, queues, and linked lists	301	(13)
Stracks	301	(6)
Queues	307	(2)
Linked lists	309	(5)
18.5 Exercises	314	(1)
19 More OOP examples	315	(16)
19.1 The heap as an abstract data structure	316	(4)
19.2 Grades: an object example	320	(10)
19.3 Exercises	330	(1)
20 What's left?	331	(2)
appendix A Command line switches	333	(3)
appendix B Special variables	336	(2)
appendix C Additional resources	338	(2)
appendix D Numeric formats	340	(2)
glossary	342	(6)
index	348