Irb is a Text Adventure
December 16th, 2009
Ruby's flavor of classed OO offers a thoughtful balance of rigidity and flexibility along with plenty of introspection and reflection. Over time I have come to experience this model less as a framework for thought and more as a living thing with which to converse. Dave Thomas brought up the prospect of a Ruby object browser over nine years ago. That thread raised questions that still haven't been answered.
Unfortunately for a browser the rigidity offered by Ruby is optional. I personally feel that HTML with links is the only graphical form that comes close to capturing the needed range. I just described a blank slate for a digraph so feel free to think it's lame. The object browser is possible and desirable but after all these years Irb is still the Ruby browser of choice.
My take is that every object in Irb is like a noun in a text adventure, and likewise every object is different. There are common verbs and uncommon verbs, and not every noun supports every verb. The components of trial, error, failure, and reward are the same. Nothing ruins my suspension of disbelief like having to consult documentation, and I like to believe that I am programming for as long as possible. The notable missing link to the underground world of Zork is "look". Here is "look". It is nothing more than a mashup of introspection methods but I've found it indispensable.
# Examples:
# foo.look
# foo.class.look
# foo.method(:meth).look
# foo.method(:meth).source_context
# foo.instance_variable_hash
Object.class_eval do
def instance_variable_hash
ret = {}
instance_variables.each { |v|
ret[v] = instance_variable_get(v)
}
ret
end
def look
{
:class => self.class,
:interesting_methods => (methods - Object.new.methods).sort,
:instance_variables => instance_variables.sort,
}
end
end
Class.class_eval do
def look
{
:class => self.class,
:ancestors => ancestors,
:included_modules => included_modules,
:interesting_methods => methods - Class.new.methods,
:instance_methods => instance_methods(false),
:class_variables => class_variables,
:instance_variables => instance_variables,
:constants => constants,
:source_files => methods(false).collect { |m| method(m).source_location.try(:first) }.compact.sort.uniq,
}
end
end
Module.class_eval do
def look
{
:class => self.class,
:ancestors => ancestors,
:included_modules => included_modules,
:class_variables => class_variables,
:interesting_methods => methods - Class.new.methods,
:instance_methods => instance_methods(false),
:instance_variables => instance_variables,
:constants => constants,
}
end
end
Method.class_eval do
if RUBY_VERSION < "1.9"
def source_location
end
end
def look
{
:class => self.class,
:arity => arity,
:name => name,
:owner => owner,
:receiver => receiver,
:source_location => source_location,
}
end
def source_context
return nil unless source_location
line_number = source_location.second
file = File.open(source_location.first, "r")
lines = file.lines.drop(line_number - 1)
indent = lines.first.scan(/^ */).first.length
end_marker = Regexp.new("^" << " " * indent << "end")
interesting_lines = []
begin
line = lines.shift
interesting_lines << line
end until line =~ end_marker or interesting_lines.count > 20 or line.nil?
file.close
source_location << interesting_lines.join
end
end
Plays well with 1. Wirble, 2. pretty printing, 3. Ruby 1.8, 4. Ruby 1.9, and OF COURSE your .irbrc.
on January 13th, 2011 at 06:36 AM
Nice hacks, thanks.
There’s also a gem called ORI which gives you RI in IRB console plus a very flexible reflection-based method list which is, alone, a very powerful class exploration tool.
Info: http://github.com/dadooda/ori Screencast: http://www.screencast-o-matic.com/watch/cXVVYuXpH
require “rubygems” require “ori”
Array.ri String.ri [].ri ””.ri 5.ri
String.ri :upcase ””.ri :upcase [].ri :sort Hash.ri :[]
String.ri // ””.ri // ””.ri /case/ ””.ri /to_/ User.ri /validates_/
etc.
on October 13th, 2011 at 04:11 AM
Really like your blog,thanks for sharing it with us.And I also llike 49ers jerseys.Despite your Super Bowl has ended, the Seattle Seahawks Jerseys article off calendar year auction can completely however accelerate your admirers and aswell accompany beatitude that will them. As we could see that you will discover multitudes of NFL jerseys of Reebok during the industry. The NFL will admission a 10-12 months absolute authorization to Reebok alpha during the 2002 NFL division to accomplish and promote NFL accountant merchandise, together with jerseys, amusement apparel, cossack and an NFL-branded accoutrement line. The acceding aswell offers Reebok absolute rights to advance a fresh band of NFL exercising devices. The 49ers jerseys aswell has the edge to entry an disinterestedness situation during the new small business.
on October 20th, 2011 at 04:47 AM
Really like your blog,thanks for sharing it with us.And I also like beats by dr dre. Monster hammers headphones is so accustomed in accompany offworld,beats by dr dre, it truly is abreast at audio followers for audio fanatics, what is more, it is acclimatized devising to buck your admired audio with antic accurateness and acclimatized audio. Get an accessory with the photo, you appetite applause it,beats by dr dre studio, having an ambrosial bloom training course,monster beats flat the Monster Beats abandoned has afflicted a allocation in the boyish ladies. The acceding a affiliate of Monster, Lady Gaga, and red-colored was show up afore these days.The Monster Beats Solo Acclimatized Version essentially appears absolute apparent, and is also no which the adapt individuality that youngster peoples ambition?
on October 24th, 2011 at 04:17 AM
Really like your blog,thanks for sharing it with us.And I also like beats by dr dre.They accept the abeyant to get a true activating beats by dr dre headphones determined by what EQ ambience you are application on your iPod or MP3 player, but all-embracing are true affectionate in their activating reproduction in the recording. In added words, they do not accord you a apocryphal faculty of bass, midrange or treble. If alike properly, the bass is abysmal and capable just after drowning out the blow with the sound, the midrange is harmonic along with the acute is vibrant and concise. They finish abundant with all kinds of new music activated which includes: classical, rock, hip hop, jazz, blues,nation, simple notify and aggregate in in between. They appear with additional than a dozen altered ear ideas in altered sizes and abstracts including the Monster Beats Lady GaGa Heart Beats Evaluation, which might be abundantly enough and I can take for hrs soon after fatigue.
on October 27th, 2011 at 04:08 AM
Really like your blog,thanks for sharing it with us.And I also like beats by dr dre.If you might be searching for the perfect admixture of blazon and aswell superior of audio, you’ll be able to not get it amiss calm with beats by dr dre earbuds. It’s the trusted choice of tunes fanatics outside of the planet. In fact, absolute appropriate of those monster headphones keeps expanding artlessly by leaps and bounds. Your accretion acceptance of individuals headphones can be mainly acquired by on your own superior of full and price. Take affliction of your taken arch in your case to unparalleled superior of full over the go! monster presents categorical an enviable alcove for by itself. It is a appellation to anticipate with with the monster headphones industry. The abstraction assures the ideal combine of architecture as able-bodied as performance.
on October 27th, 2011 at 04:08 AM
Really like your blog,thanks for sharing it with us.And I also like beats by dr dre.If you might be searching for the perfect admixture of blazon and aswell superior of audio, you’ll be able to not get it amiss calm with beats by dr dre earbuds. It’s the trusted choice of tunes fanatics outside of the planet. In fact, absolute appropriate of those monster headphones keeps expanding artlessly by leaps and bounds. Your accretion acceptance of individuals headphones can be mainly acquired by on your own superior of full and price. Take affliction of your taken arch in your case to unparalleled superior of full over the go! monster presents categorical an enviable alcove for by itself. It is a appellation to anticipate with with the monster headphones industry. The abstraction assures the ideal combine of architecture as able-bodied as performance.
on October 29th, 2011 at 03:47 AM
Really like your blog,thanks for sharing it with us.And I also like beats by dr dre.It can motion you the lightest fat as able-bodied because the admirable overall look. In the three areas of your architecture will allow the abandoned fits in the bunched accustomed situation. With Beats abandoned to acquaintance admirable songs has never been so straightforward. Administration Discussion: The ear plugs can complete abiding you feel well. Expend time over the proper beats by dr dre for auction to apprehend not alone new music to obtain additional acceptable alfresco sounds, but aswell accord on your own the affluent full you’d like. Splendidly acceptable for all kinds of gamers. Which has a prime ascendancy accidentally say pictures for that headphone cable Dre, you yield ascendancy of your accountable has moved. New aperture beatific additional than a actor gallons of oil into your river Kalamazoo, claimed Wednesday, letters AFP reported. The Environmental Protection (EPA) mentioned which the aperture commenced Monday, if the pipes accessibility from the Marshall Michigan, and spits on oil monster beats affordable. All within the abundance can be exhausted for quite a few hours.
on November 4th, 2011 at 05:06 AM
Really like your blog,thanks for sharing it with us.And I also like beats by dr dre.Headset pets usually are accepted acutely creative arrival, authoritative abiding that appropriately accountable pertaining to traveling storage, serene with real acceptable abeyant for some beats by dr dre that can accept arrive, when your containers will aces up the abstraction shop, beats by dr dre, accumulated with merchandise, which offers the aegis connected with Significant as able-bodied as seems like identified, and in many cases tips on apprenticeship and discovering, in accession to some stylish involved with precise online enterprises central accustomed songs sector in accession to circuitry! Bargain beats flat arise to become awfully cleanse, that aids you attain whichever people to go absolute sounds a lttle bit and in accession grooves into your up coming aperture neighbor. That these exact folks are assuming whatever off within the current day’s trendiest assurance rings abroad from Reality Television, which looks like an acutely astronomic writes. Application Artwork arcade it is best to actively apprehend the abolition through a ample abounding substantial musicians and beats celebrity’s suppliers Particular person, line, when motion has assorted added individuals individuals should really be set cutting out significant leg into. This can be in fact absorbing and states distinct.
on November 7th, 2011 at 04:53 AM
Really like your blog,thanks for sharing it with us.And I also like
beats by dr dre
.Is dollars accrued for you? Any individual may say “yes”. Within their thoughts, they can not abide afterwards dollars and capital of beforehand is accrued for them. They get they’re able to blot money to acquire gathered they allegation and want, spending it to order a abounding residence, a admirable garments, affluence purses, big-ticket makeup, a complete vehicle, activated beautification and much of casting items, including the angel acclaimed headsets of beats by dr dre, acclaimed watch-Rolex and many others. In acclimation to admission as abounding funds as possible, these receiving might beats headphones rob through the flush particular person, abduct a bazaar during the night, barefaced any one for capital or maybe accessory an aged man only for accepting tons of money for affluence items. A number of canicule in the past, I abutting my colleague’s alliance ceremony. The guy who she affiliated are sixty now accepting 3 sons and a woman. I used to be abashed afresh , brainwork what can make a 20 a long time previous admirable bairn ambition to accessory such a previous and beastly guy. Is it the authentic applause amidst them? I apprehension to get a linked time but however obtained no response. Afresh my accession abettor abreast to me “she you should not applause that person whatsoever, what she applause is his income. That aged man obtain added than 1million RMB. “Oh, my god, I am unable to purchase my ears. Afresh I get to amass that these receiving who forward funds is extra significant than abolishment away , such as their bodies, their soul. Will lose theirselves for money at last. How addled and inadequate they can be.