One more known tie problem.

[p5sagit/p5-mst-13.2.git] / pod / perlfaq4.pod

diff --git a/pod/perlfaq4.pod b/pod/perlfaq4.pod
index b641d58..af08e47 100644 (file)
--- a/pod/perlfaq4.pod
+++ b/pod/perlfaq4.pod
@@ -1,6 +1,6 @@
 =head1 NAME
 
-perlfaq4 - Data Manipulation ($Revision: 1.40 $, $Date: 2003/01/26 17:43:21 $)
+perlfaq4 - Data Manipulation ($Revision: 1.44 $, $Date: 2003/07/28 17:35:21 $)
 
 =head1 DESCRIPTION
 
@@ -316,7 +316,7 @@ Get the http://www.cpan.org/modules/by-module/Roman module.
 If you're using a version of Perl before 5.004, you must call C<srand>
 once at the start of your program to seed the random number generator.
 
-        BEGIN { srand() if $[ < 5.004 }
+        BEGIN { srand() if $] < 5.004 }
 
 5.004 and later automatically call C<srand> at the beginning.  Don't
 call C<srand> more than once---you make your numbers less random, rather
@@ -353,12 +353,33 @@ C<random_int_in(50,120)>
 
 =head1 Data: Dates
 
-=head2 How do I find the week-of-the-year/day-of-the-year?
+=head2 How do I find the day or week of the year?
 
-The day of the year is in the array returned by localtime() (see
-L<perlfunc/"localtime">):
+The localtime function returns the day of the week.  Without an
+argument localtime uses the current time.
 
-    $day_of_year = (localtime(time()))[7];
+    $day_of_year = (localtime)[7];
+
+The POSIX module can also format a date as the day of the year or
+week of the year.
+
+       use POSIX qw/strftime/;
+       my $day_of_year  = strftime "%j", localtime;
+       my $week_of_year = strftime "%W", localtime;
+
+To get the day of year for any date, use the Time::Local module to get
+a time in epoch seconds for the argument to localtime.
+
+       use POSIX qw/strftime/;
+       use Time::Local;
+       my $week_of_year = strftime "%W", 
+               localtime( timelocal( 0, 0, 0, 18, 11, 1987 ) );
+
+The Date::Calc module provides two functions for to calculate these.
+
+       use Date::Calc;
+       my $day_of_year  = Day_of_Year(  1987, 12, 18 );
+       my $week_of_year = Week_of_Year( 1987, 12, 18 );
 
 =head2 How do I find the current century or millennium?
 
@@ -741,6 +762,19 @@ case", but that's not quite accurate.  Consider the proper
 capitalization of the movie I<Dr. Strangelove or: How I Learned to
 Stop Worrying and Love the Bomb>, for example.
 
+Damian Conway's L<Text::Autoformat> module provides some smart
+case transformations:
+
+    use Text::Autoformat;
+    my $x = "Dr. Strangelove or: How I Learned to Stop ".
+      "Worrying and Love the Bomb";
+
+    print $x, "\n";
+    for my $style (qw( sentence title highlight ))
+    {
+        print autoformat($x, { case => $style }), "\n";
+    }
+
 =head2 How can I split a [character] delimited string except when inside [character]?
 
 Several modules can handle this sort of pasing---Text::Balanced,
@@ -2003,8 +2037,9 @@ and C<retrieve> functions:
 =head2 How do I print out or copy a recursive data structure?
 
 The Data::Dumper module on CPAN (or the 5.005 release of Perl) is great
-for printing out data structures.  The Storable module, found on CPAN,
-provides a function called C<dclone> that recursively copies its argument.
+for printing out data structures.  The Storable module on CPAN (or the
+5.8 release of Perl), provides a function called C<dclone> that recursively
+copies its argument.
 
     use Storable qw(dclone);
     $r2 = dclone($r1);