Download e-book for iPad: Code Reading: The Open Source Perspective by Diomidis Spinellis

By Diomidis Spinellis

ISBN-10: 0201799405

ISBN-13: 9780201799408

This e-book is a distinct and crucial reference that focuses upon the studying and comprehension of latest software program code. whereas code examining is a crucial job confronted via the majority of scholars, it's been almost overlooked as a self-discipline through current references. The ebook fills this desire with a realistic presentation of all very important code thoughts, shape, constitution, and syntax pupil is probably going to come across. The suggestions are supported via examples taken from real-world open resource software program initiatives. the focal point upon studying code (rather than constructing and enforcing courses from scratch) presents for a enormously elevated breadth of insurance.

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Extra info for Code Reading: The Open Source Perspective

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This form of gradual understanding is common when reading code; understanding one part of the code can make others fall into place. Based on this form of gradual understanding you can employ a strategy for understanding difficult code similar to the one often used to combine the pieces of a jigsaw puzzle: start with the easy parts. 7 Examine the visibility of functions and variables in programs in your environment. Can it be improved (made more conservative)? 8 Pick some functions or methods from the book'sCD-ROM or from your environment and determine their role using the strategies we outlined.

You will find switch statements used when a number of discrete integer or character values are being processed. The code to handle each value is preceded by a case label. When the value of the expression in theswitch statement matches the value of one of the case labels, the program will start to execute statements from that point onward. If none of the label values match the expression value and a default label exists, control will transfer to that point; otherwise, no code within the switch block will get executed.

1 A Complete Program A very simple yet useful program available on Unix systems is echo, which prints its arguments on the standard output (typically the screen). It is often used to display information to the user as in: echo "Cool! " [1] [2] in the NetBSD upgrade script. 1 contains the complete source code of echo. c:3–80 As you can see, more than half of the program code consists of legal and administrative information such as copyrights, licensing information, and program version identifiers.

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Code Reading: The Open Source Perspective by Diomidis Spinellis

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