Foro - Perl en Español

por **explorer** » 2015-06-14 06:56 @330

Python: Elk
Elk is an object system for Python inspired by Moose for Perl. It implements many of the features of Moose including:

attribute delegation
default attribute values
lazy attribute initialisation
read-only attributes
required attributes
attribute type constraints
roles
method modifiers

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Using python Syntax Highlighting

import elk
 
 
class Point(elk.Elk):
    x = elk.ElkAttribute(mode='rw', type=int)
    y = elk.ElkAttribute(mode='rw', type=int)
 
    def clear(self):
        self.x = 0
        self.y = 0
 
 
class Point3D(Point):
    z = elk.ElkAttribute(mode='rw', type=int)
 
    @elk.after('clear')
    def clear_z(self):
        self.z = 0
Coloreado en 0.003 segundos,  usando GeSHi 1.0.8.4

Ruby: MooseX
A postmodern object DSL for Ruby. MooseX is a toolbox to create Classes based on DSL, with unique features like

method delegation and currying ( see 'handles')
lazy attributes
roles / abstract classes / interfaces
traits / monads
plugins
parameterized roles
composable type check
events

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Using ruby Syntax Highlighting

require 'moosex'
 
class Point
  include MooseX
 
  has x: {
    is: :rw,      # read-write (mandatory)
    isa: Integer, # should be Integer
    default: 0,   # default value is 0 (constant)
  }
 
  has y: {
    is: :rw,
    isa: Integer,
    default: -> { 0 }, # you should specify a lambda
  }
 
  def clear! 
    self.x= 0     # to run with type-check you must
    self.y= 0     # use the setter instad @x=
  end
 
  def to_s
    "Point[x=#{self.x}, y=#{self.y}]"
  end 
end 
 
# now you have a generic constructor
p1  = Point.new                       # x and y will be 0
p2  = Point.new( x:  5 )              # y will be 0
p3  = Point.new( x:  5, y: 4)
Coloreado en 0.002 segundos,  usando GeSHi 1.0.8.4

JavaScript: o.js
If you like the rich OO features of other languages, such as Perl and Java, and wish you had the same power in JavaScript, but with a small footprint, then o.js is for you.

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Using javascript Syntax Highlighting

var Person = new o.Class({
    attributes: {
        name: { type:o.nonEmptyStringType },
        age: { type:o.integerType }
    },
    methods: {
        log_name: function () {
            console.log( this.name() );
        }
    }
});
var baggins = new Person({
    name: 'Bilbo',
    age: 111
});
baggins.log_name();
Coloreado en 0.001 segundos,  usando GeSHi 1.0.8.4

Javascript: Joose
Joose is a self-hosting meta object system for JavaScript with support for classes, inheritance, mixins, traits, method modifiers and more.

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Using javascript Syntax Highlighting

Class("Point", {
    has: {
        x: {is: "ro"},
        y: {is: "rw"},
    },
    methods: {
        clear: function () {
            this.x = 0;
            this.setY(0);
        }
    }
})
 
Class("Point3D", {
    isa: Point,
    has: {
        z: {}
    },
    after: {
        clear: function () {
            this.z = 0;
        }
    }
})
 
var point = new Point3D();
Coloreado en 0.001 segundos,  usando GeSHi 1.0.8.4

Ruby: Reindeer
Reindeer takes Ruby's existing OO features and extends them with some sugar borrowed from Moose.

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Using ruby Syntax Highlighting

require 'reindeer'
class Point < Reindeer
  has :x, is: :rw, is_a: Integer
  has :y, is: :rw, is_a: Integer
end
class Point3D < Point
  has :z, is: :rw, is_a: Integer
end
Coloreado en 0.001 segundos,  usando GeSHi 1.0.8.4

Foro - Perl en Español

Algo tiene Moose... cuando se le imita

Algo tiene Moose... cuando se le imita

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