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Download Advanced Perl Programming by Sriram Srinivasan PDF

By Sriram Srinivasan

No matter if your wisdom of Perl is informal or deep, this ebook will make you a extra comprehensive programmer. It covers advanced recommendations for handling production-ready Perl courses and explains tools for manipulating information and gadgets which could have seemed like magic ahead of. additionally, it units Perl within the context of a bigger setting, giving you the history you would like for facing networks, databases, and GUIs. it is also a dialogue of internals that will help you software extra successfully and embed Perl inside of C or C inside Perl. significant themes contain the sensible use of programs and sessions (object-oriented programming), advanced facts constructions, endurance (e.g., utilizing a database), networking, graphical interfaces utilizing the Tk toolkit, interplay with c programming language capabilities, embedding and increasing the Perl interpreter, and chosen internals.

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Normalize # it by adding 12. Then reduce it to a zero base by subtracting 7 # (that is, 7 hrs to 19 hrs becomes 0 - 12. 4. 4: Checking Constraints on a Professor's Time sub prof_check_constraints { my ($prof) = @_; my $r_prof = $profs{$prof}; # %profs created by prof_read_file my $office_hours = $r_prof->{Office Hours}; my $rl_courses = $r_prof->{Courses}; for $i (0 .. $#{$rl_courses}) { $course_hours = course_get_hours($rl_courses->[$i]); if (interval_conflicts($office_hours, $course_hours)) { print "Prof.

Num_rows, $num_cols); } matrix_multiply takes two matrices by reference. A single element is obtained as $r_mat->[$i][$j], and a single row is obtained as $r_mat->[0]. 1 Hash of Hashes Representation If the matrix is large and sparse (only a few elements have nonzero values), a hash of hashes is likely a more space-efficient representation. For example, the matrix can be built like this: $matrix{0}{2} = 100; $matrix{1}{0} = 200; $matrix{2}{1} = 300; The code above creates a hash table, %matrix, which maps a row number to a nested hash.

Schumacher Office Hours: Mon 3-4, Wed 8-9 Courses : HS201, SS343 #Course taught ... dat id : 52003 # Registration id Name : Garibaldi Courses : H301, H302, M201 # Courses taken ... dat id : HS201 Description : Small is beautiful Class Hours : Mon 2-4, Wed 9-10, Thu 4-5 ... Each "id:" line starts a new record. Among other tasks, let us say we are required to find out whether there is a scheduling conflict on professors' and students' hours. Because our focus is on data representation and getting a feel for Perl's reference syntax, we will look at implementing only some parts of the problem.

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