SHUT THE FUCK UP AND WRITE SOME CODE

libraries and modules

Perl Ruby PHP Python

スクリプト言語の比較

http://hyperpolyglot.org/scripting を参考に、スクリプト言語の勉強をしてまいります。

libraries and modules

load library

require 'Foo.pm'; # or
require Foo; # or
use Foo;

<?php
require_once('foo.php');
?>

import foo

require 'foo' # or
require 'foo.rb'

reload library

do 'Foo.pm';

<?php
require('foo.php');
?>

reload(foo)

load 'foo.rb'

library path

push @INC, '/some/path';

<?php
$o = ini_get('include_path');
$n = $o . ':/some/path';
ini_set('include_path', $n);
?>

import sys
sys.path.append('/some/path')

$: << '/some/path'

library path environment variable

PERL5LIB



none

PYTHONPATH

RUBYLIB

library path command line option

-I



none



none

-I

module declaration

package Foo;
require Exporter;
our @ISA = ("Exporter");
our @EXPORT_OK = ('bar', 'baz');

<?php
namespace Foo;
?>



put declarations in foo.py

class Foo or module Foo

submodule declaration

package Foo::Bar;

<?php
namespace Foo\Bar;
?>



create directory foo

in library path

containing file bar.py

module Foo::Bar or
module Foo
  module Bar

module separator

Foo::Bar::baz();

<?php
\Foo\Bar\baz();
?>

foo.bar.baz()

Foo::Bar.baz

import module

# imports symbols in @EXPORT:
use Foo;



none, 

but a long module name

can be shortened

from foo import *

import symbols

# bar and baz must be in
# @EXPORT or @EXPORT_OK:
use Foo ('bar', 'baz');



only class names can be imported

from foo import bar, baz



none

package management

$ perldoc perllocal
$ perl -MCPAN -e 'install Moose'

<?php
$ pear list
$ pear install Math_BigInteger
?>

$ python
>>> help('modules')
download pkg
with matching
python version
$ tar xf libxml2-python-2.6.0.tar.gz
$ cd libxml2-python-2.6.0
$ sudo python setup.py install

$ gem list
$ gem install rails

スクリプト言語の比較 - 目次

arithmetic and logic

execution control

environment and i/o

libraries and modules

reflection and hooks