Advanced Perl Programming - download pdf or read online

By Sriram Srinivasan

ISBN-10: 1565922204

ISBN-13: 9781565922204

Even if your wisdom of Perl is informal or deep, this ebook will make you a extra finished programmer. It covers complicated ideas for coping with production-ready Perl courses and explains equipment for manipulating info and gadgets which may have gave the impression of magic ahead of. additionally, it units Perl within the context of a bigger setting, giving you the history you wish for facing networks, databases, and GUIs. it's also a dialogue of internals that can assist you application extra successfully and embed Perl inside C or C inside Perl. significant themes contain the sensible use of programs and periods (object-oriented programming), advanced information buildings, endurance (e.g., utilizing a database), networking, graphical interfaces utilizing the Tk toolkit, interplay with interval capabilities, embedding and lengthening the Perl interpreter, and chosen internals.

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In turn, these procedures may call print_ref recursively if the data types that they handle contain one or more references. Whenever a reference is encountered, it is also checked with a hash %already_seen to determine whether the reference has been printed before. This prevents the routine from going into an infinite loop in the presence of circular references. All functions manipulate the global variable $level and call print_indented, which appropriately indents and prints the string given to it.

For example, if you had procedures such as create_matrix( ), get_element(mat,i,j), and set_element(mat,i,j), other procedures do not have to know the internal representation. Coding for change is often better than coding for run-time efficiency. We'll discuss this approach a great deal more in Chapter 7. 3 Professors, Students, Courses This example shows how you might represent professor, student, and course data as hierarchical records and how to link them up. Schumacher Office Hours: Mon 3-4, Wed 8-9 Courses : HS201, SS343 #Course taught ...

4 Pass the Envelope Let us say we are given a text file containing Academy Award (Oscar) winners by year and category, formatted as follows: 1995:Actor:Nicholas Cage 1995:Picture:Braveheart 1995:Supporting Actor:Kevin Spacey 1994:Actor:Tom Hanks 1994:Picture:Forrest Gump 1928:Picture:WINGS We would like to provide the following services:[2] ● Given a year and category, print the corresponding entry. ● Given a year, print all entries for that year. ● Given a category, print the year and title of all entries for that category.

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Advanced Perl Programming by Sriram Srinivasan


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