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Code Reading: The Open Source Perspective by Diomidis Spinellis PDF

By Diomidis Spinellis

ISBN-10: 0201799405

ISBN-13: 9780201799408

This e-book is a special and crucial reference that focuses upon the interpreting and comprehension of present software program code. whereas code analyzing is a vital job confronted by way of nearly all of scholars, it's been almost overlooked as a self-discipline by way of present references. The publication fills this desire with a realistic presentation of all vital code options, shape, constitution, and syntax pupil is probably going to come across. The ideas are supported via examples taken from real-world open resource software program initiatives. the focal point upon interpreting code (rather than constructing and enforcing courses from scratch) offers for a enormously elevated breadth of insurance.

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Extra info for Code Reading: The Open Source Perspective

Example text

Some compilers may detect some of these errors, but you should not rely on it. The part of the program that loops over all remaining arguments and prints them separated by a space character is relatively straightforward. 1:7). The printf function will always print its first argument, the format specification. c:347 printf(version); Printing arbitrary strings by passing them as the format specification toprintf will produce incorrect results when these strings contain conversion specifications (for example, an SCCS revision control identifier containing the % character in the case above).

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. The provision of such information, together with a summary of the specific program or module functionality, is a common characteristic in large, organized systems.

In Java programs you will find the argv String array and its length method used for the same purpose, while in Perl code the equivalent constructs you will see are the @ARGV array and the $#ARGV scalar. 1 The Unix echo program. /* * Copyright (c) 1989, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer.

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Code Reading: The Open Source Perspective by Diomidis Spinellis

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