Perl Ground Level Lecture 1 Data Types

Perl From Ground level and Up Lecture 1 October 22 2007 By Shmuel Fomberg

Data Types ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],October 22 2007 Shmuel Fomberg

Data Types ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],October 22 2007 Shmuel Fomberg

Data Types ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],October 22 2007 Shmuel Fomberg

Data Types ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],October 22 2007 Shmuel Fomberg

Packages ,[object Object],[object Object],[object Object],[object Object],[object Object],October 22 2007 Shmuel Fomberg

Packages October 22 2007 Shmuel Fomberg main MyPkg Private MyPkg Private id GLOB SCALAR 5

Packages ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],October 22 2007 Shmuel Fomberg

Lexicals ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],October 22 2007 Shmuel Fomberg

Closure ,[object Object],October 22 2007 Shmuel Fomberg my $offset = 5; sub get_acc { my $acc = 1; return sub { return $offset + $acc++; }; }

Local Globals ,[object Object],[object Object],October 22 2007 Shmuel Fomberg open my $fh, "foo" or die $!; local $/; # enable localized slurp mode my $content = <$fh>; close $fh; { local *blaY= sub {return 1;}; print defined(&blaY) ? "" : "Not ", "Exists"; } print defined(&blaY) ? "" : "Not ", "Exists";

Perl Ground Level Lecture 1 Data Types

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Perl Ground Level Lecture 1 Data Types