代码搜索：如何学习 PL？
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pl dumpvar.pl
package DUMPVAR;
sub dumpvar {
($packageName) = @_;
$rPackage = \%{"${packageName}::"}; # Get a reference to the appropriate symbol table hash.
$, = " " ;
while (($varName, $glob
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pl menu.pl
use Tk;
$top = MainWindow->new();
# Create Menu Bar
$menu_bar = $top->Frame()->pack('-side' => 'top');
#Search menu button
$search_mb = $menu_bar->Menubutton('-text' => 'Search',
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pl tetris.pl
###############################################################################
# tetris.pl - tetris using Perl and Tk
# ... Sriram
#############################################
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pl canvas.pl
use Tk;
$top = MainWindow->new();
$canvas = $top->Canvas('-width' => 300, -height => 245)->pack();
# Draw a set of circles along an archimedean spiral
# The centers of these circles move along the
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pl hlist.pl
use Tk;
require Tk::HList;
$top = MainWindow->new();
$h = $top->Scrolled('HList',
'-drawbranch' => 1,
'-separator' => '/',
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pl listbox.pl
use Tk;
$top = MainWindow->new();
$wine_list = $top->Listbox("-width" => 20, "-height" => 5
)->pack();
$wine_list->insert('end', # Insert at end, the following list
"Napa Va
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pl perlman.pl
#!/opt/bin/perl
use strict;
#--------------------------------------------------------------
# perlman: man page viewer in Perl
#--------------------------------------------------------------
use
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pl scale.pl
use Tk;
# Show Celsius/Fahrenheit equivalence using scales.
$top = MainWindow->new();
$celsius_val = 50;
compute_fahrenheit();
$top->Scale('-orient' => 'horizontal',
'-from'
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pl eval.pl
while (defined($s = )) { # Read a line into $s
$result = eval $s; # Evaluate that line
if ($@) { # Check for compile or run-time errors.
print "Invalid
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pl col.pl
#!/opt/bin/perl
# Extracts columns of text from a file
# Usage : col [-s] col-range1, col-range2, files ...
# where col-range is specified as col1-col2 (column 1 through column2)
# or