Life with Perl

Life with Perlboth 5 and 6

Life with Perlboth 5 and 6

5 stands for both 5.8.8 and 5.10

Versions of Perl (perlhist)

Lyrical digression

Time measuring

5.000 17 October 1994

5.6.0 22 March 2000

5.8.0 18 July 20025.8.8 31 January 2006

5.10 18 December 2008

Versions of Perl (perlhist)

5.000 17 October 1994

5.6.0 22 March 2000

5.8.0 18 July 20025.8.8 31 January 2006

5.10 18 December 2008

6.0 ?

Versions of Perl (perlhist)

5.000 17 October 1994

5.6.0 22 March 2000

5.8.0 18 July 20025.8.8 31 January 2006

5.10 18 December 2008

6.0 Сhristmas

Versions of Perl (perlhist)

5.000 17 October 1994

5.6.0 22 March 2000

5.8.0 18 July 20025.8.8 31 January 2006

5.10 18 December 2008

6.0 2000

Versions of Perl (perlhist)

Perl 6 docs, specs, thoughts

RFCsApocalypsesExegesesSynopses

5 != 6

Lyrical digression

Perl 5 mess

Perl 6 clean-up

5 != 64 != 5

Programme (script?)

Compiler

Virtual machine (VM)

Byte-code

Programme (script?)

Compiler

Virtual machine (VM)

Byte-code

BasicForthJakoLispm4OokPerl 6Perl 5PythonRubySchemeTcl

PASM

IMC

PBC

PIR

PIL

C#J#VB.NETJScript.NETmanaged C++

Ada (A#)F#COBOL.NETFORTRAN.NETPerl.NET

CLR

Java

JRE

Most practical compilers

languages/perl6 in parrot.tar.gz

Perl6::* on CPAN

PUGS

Rakudo

Most practical compilers

Rakudo

= = parrot/langauges/perl6

Most practical compilers

Rakudo

= = parrot/langauges/perl6 + years

PUGS. Made with Haskell

PUGS. Made with Haskell

Most full coverage of Perl 6 specs

PUGS. Made with Haskell

Most full coverage of Perl 6 specs

Needs latest version of GHC

It is not lyrics

PUGS. Made with Haskell

Most full coverage of Perl 6 specs

Needs latest version of GHC

Slow

PUGS. Made with Haskell

Most full coverage of Perl 6 specs

Needs latest version of GHC

Slow

Contains tests

Perl 6

perl.it

perl.it!

UTF-8

say and print

say"俄罗斯新闻网";

say and print

say"俄罗斯新闻网";

"俄罗斯新闻网".say;

say and print

say"俄罗斯新闻网";

"俄罗斯新闻网".say;

"俄罗斯新闻网".say();

say and print

say"string";

say123;

say(12+45);

say and print

say"string";

say123;

say(12+45);

"string".say;

123.say;

say and print

say"string";

say123;

say(12+45);

"string".say;

123.say;

3.14.say;

String length

my$str="俄罗斯新闻网";

say$str.length;

String length

my$str="俄罗斯新闻网";

say$str.length;

say$str.chars;6say$str.bytes;18

String concatenation

my$string_a="abcde";

my$string_b="fghij";

print$string_a.$string_b;5

print$string_a~$string_b;6

Lyrical digression

Different wishes

Different wishes

Variables

my$string="abcde";

my@array=(10,20,30);

my%hash=("one"=>10,"two"=>20);

Variables

my$string="abcde";

my@array=(10,20,30);

my%hash=("one"=>10,"two"=>20);

print$string;

print$string;

5

6

Variables

my$string="abcde";

my@array=(10,20,30);

my%hash=("one"=>10,"two"=>20);

5

6

print$array[1];

print@array[1];

Variables

my$string="abcde";

my@array=(10,20,30);

my%hash=("one"=>10,"two"=>20);

5

6

print$hash{"one"};

print%hash{"one"};

Variables

my$string="abcde";

my@array=(10,20,30);

my%hash=("one"=>10,"two"=>20);

5

6

print$hash{"one"};

print%hash{"one"};print%hash<one>;

print%hash<onetwo>;

Contexts

my@array=(5..10);

Contexts

my@array=(5..10);

say~@array; 5 6 7 8 9 10

Contexts

my@array=(5..10);

say~@array; 5 6 7 8 9 10

say+@array;6

Contexts

my@array=(5..10);

say~@array; 5 6 7 8 9 10

sayint@array;6

Contexts

my@array=(5..10);

say~@array; 5 6 7 8 9 10

sayint@array;6

say~hash@array;5678910

Contexts

my$value=100;

say$value;100

Contexts

my$value=100;

say$value;100

say?$value;1

Subroutines

subcallme($first,$second){say"$first,$second";}

callme(10,20);

Subroutines

subcallme($first,$second){say"$first,$second";}

callme(10,20);callme10,20;

Subroutines

subcallme($first,$second){say"$first,$second";}

callme(10,20);callme10,20;callme(10,20);

Subroutines

subcallme($first,$second){say"$first,$second";}

callme(10,20);callme10,20;callme(10,20);callme(second=>20,first=>10);

Subroutines

subcallme(@a,@b){say@a~","~@b;}

my@odd=(1,3);my@even=(2,4);callme@odd,@even;13,24

Subroutinessubcallme($argisrw)

subinc($value,$step=1)

Anonymous subroutines

my$print_line_break={print"<br/>";}

$print_line_break();

Anonymous subroutines

my$square=‐>($value){$value**2;}

say$square(20);400

Anonymous subroutines

my$square=‐>($value){$value**2;}

say$square(20);400say$square20;

Cycles

for@list{say$_;}

Cycles

for@list‐>$value{say$value;}

Cycles

for@list‐>$value{say$value;}

for@list,sub($value){say$value;}

Hyperoperators

my@odd=(1,3,5);my@even=(2,4,6);

my@sum=@odd»+«@even;say~@sum;3711

Hyperoperators

my@odd=(1,3,5);my@even=(2,4,6);

my@sum=@odd»+«@even;say~@sum;

my@next=@sum»+«1;say~@next;

Hyperoperators

my@odd=(1,3,5);my@even=(2,4,6);

my@sum=@odd>>+<<@even;say~@sum;

my@next=@sum>>+<<1;say~@next;

Hyperoperator monument

Junctions

say"yes"if20==10|20|30;

say"yes"if20==any(10,20,30);

Junctions

say"yes"if20==10|20|30;

say"yes"if20==any(10,20,30);

say"no"if21==none(10,20,30);

multi functions

multisubthe_name($scalar){...}multisubthe_name($s1,$s2){...}multisubthe_name(@array){...}

multi functions

multisubthe_name($scalar){...}multisubthe_name($s1,$s2){...}multisubthe_name(@array){...}

the_name($some_value);the_name($value1,$value2);the_name(@some_array);

Overriding operators

multiinfix:<+>($a,$b){return$a‐$b;}

say10+20;‐10

Overriding operators

multipostfix:<@>($power){return2**$power;}

say8@;256

Overriding operators

subpostfix:<power_of_two>($power){return2**$power;}

say8power_of_two;256

switch and case

given($x){when"a"{say...}when"b"{say...}when/<[a‐z]>/{...}default{...}}

Smart matching

~~

Smart matching

$a~~$b==

$b~~$a

Smart matching

my$b;

$b~~undef

!defined$b

Smart matching

my$c='abc';

$c~~'abc'

$ceq'abc'

Smart matching

my@a=(1..3);my@b=(1..3);

@a~~@b

1==1&&2==2&&3==3

Smart matching

my@f=('a'..'f');

@f~~'d'

grep{$_eq'd'}@f

Smart matching

my%h=(a=>'alpha',b=>'beta');

%h~~'a'

exists$h{'a'}

Smart matchingmy%h=(a=>'alpha',b=>'beta');my%hh=(b=>1,a=>2);

%h~~%hh[sortkeys%h]~~[sortkeys%hh]

Smart matching

Works

in Perl 5.10!

People think of Perl 6

I think of today's Perl 6

Classes

classAlphabet{}

my$abc=newAlphabet;

Classes

classAlphabet{has$.Name;has$Length;}

my$abc=newAlphabet;$abc.Name="Latin";$abc.Length=26;

Classes

classAlphabet{...methodinfo{say"$.Name;$Length";}}

$abc.info();

Classes

classAlphabet{methodBUILD{...}methodDESTROY{...}}

Inheritance

classCharactersisAlphabet{}

my$chars=newCharacters;$chars.info();

Inheritance

classCharactersisAlphabetisUniqueisNonLatin{}

Roles (interfaces?)

roleHaveName{has$Name;methodGetName{return$.Name;}}

classNamedAbcdoesHaveName{}

June 2003

June 2004

June 2004 2005

2005

2007?

2008?

Cancelled

Perl 6in

Perl 5.10

usefeatureqw(sayswitchstate);

subf{state$c;say++$c;}f();f();f();

123

//

defined-or

my$c=0;my$d=$c//3;say$d;0

my$e=0;my$f=$e||4;say$f;4

Perl 6 today is

Rakudowww.rakudo.org

The Way Of The Camel

Rakudа-do

Rakudo

cdlanguages/perl6/makeperl6

Binding

my$hour=14;my$summertime:=$hour;

say$hour;$summertime++;

say$hour;

.WHATclassLanguage{has$!Name;

methodgive_name($newname){$!Name=$newname;}

methodsay_name{say"Thisis$!Name";}}

my$lang=Language.new();$lang.give_name('Perl6');$lang.say_name();

.WHATclassLanguage{}

my$lang=Language.new();

say$lang.WHAT;

sayLanguage.WHAT;

say'before';try{die'Bye!';}say'after';

try

regexlanguage{Perl|XML};

say"ok"

if'Perl'~~/<language>/;

say"notok"

unless'PHP'~~/<language>/;

Regexes

More

classFoo{};

myFoo$x;

$x=Foo.new();

More

async{

my@sum=@odd>>+<<@even;

}

More

atomic{

$a‐=100;

$b+=100;

}

__END__

Andrew Shitovmail@andy.sh | http://andy.sh

DORS/CLUC, Zagreb, 2008