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  • Detect similar sounding words in Ruby

    - by JP
    I'm aware of SOUNDEX and (double) Metaphone, but these don't let me test for the similarity of words as a whole - for example "Hi" sounds very similar to "Bye", but both of these methods will mark them as completely different. Are there any libraries in Ruby, or any methods you know of, that are capable of determining the similarity between two words? (Either a boolean is/isn't similar, or numerical 40% similar) edit: Extra bonus points if there is an easy method to 'drop in' a different dialect or language!

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  • Accessing parent 'this' inside a jQuery $.getJSON

    - by JP
    I'm going to assume that the overall structure of my code as it currently stands is 'best', otherwise this question gets too long, but if I've made any obvious mistakes (or if I've made life hard for myself) then please correct away! Using jQuery, I have a javascript 'class' set out something like this: function MyClass () { this.noise = "Woof" this.dostuff = function() { $.getJSON("http://cows.go",function(moo) { this.noise = moo.inEnglish; } } } var instance = new MyClass(); instance.doStuff() console.log(instance.noise) I'm expecting some kinda tea drinking moo in the console, but of course I'm getting an error about this.noise not being defined (because $.getJSON doesn't pass this through, right?) Any suggestions as to how to be able to affect instance.squeak for any and all instances of MyClass without interference?

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  • QuickTimeX in Applescript / Scripting Bridge

    - by JP
    I'd like to be able to grab the metadata of the currently playing file in Quicktime X using ScriptingBridge and Ruby, so far I have the following code require 'osx/cocoa' OSX.require_framework 'ScriptingBridge' @app = OSX::SBApplication.applicationWithBundleIdentifier("com.apple.QuickTimePlayerX") @app.documents.each do |movie| # What now?! end But I can't find any functions in QuickTime X's applescript dictionary to get the metadata from a document object (the same data you can see in QT's 'Show Movie Inspector' HUD) — does anyone have any ideas?

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  • Sintra app in a gem

    - by JP
    I have a Sinatra application I've created and I'd like to package it as a gem-based binary. I have my gemspec and gem set up to generate a suitable executable that points to the my_sinatra_app.rb (which is executable) but the sinatra server never runs. Any ideas why and how to make it work? my_sinatra_app executable: #!/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby # # This file was generated by RubyGems. require 'rubygems' version = ">= 0" if ARGV.first =~ /^_(.*)_$/ and Gem::Version.correct? $1 then version = $1 ARGV.shift end gem 'my_sinatra_app', version load Gem.bin_path('my_sinatra_app', 'my_sinatra_app', version)

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  • ActiveRecord finding from inside a serialized field

    - by JP
    While working with ActiveRecord I have a table which stores a serialized array of participant usernames for each row. Is there an easy way to search for all rows who contain a specific user? I realise I could just make a new linked table for the participants, but I feel like that would increase my overhead unnecessarily -- what do you think?

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  • Sinatra Set Settings (Ruby)

    - by JP
    Using Sinatra in Ruby you can set the server's settings by doing: set :myvariable, "MyValue" and then access it anywhere in templates etc with settings.myvariable. In my script I need to be able to re-set these variables falling back to a bunch of defaults. I figured the easiest way to do this would be to have a function that performs all the sets calling it at the start of the Sinatra server and when I need to make the alterations: class MyApp < Sinatra::Application helpers do def set_settings s = settings_from_yaml() set :myvariable, s['MyVariable'] || "default" end end # Here I would expect to be able to do: set_settings() # But the function isn't found! get '/my_path' do if things_go_right set_settings end end # Etc end As explained in the code above, the set_settings function isn't found, am I going about this the wrong way?

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  • C++ Header Guard issues

    - by JP
    I am making a small C++ framework, which contains many .h and .cpp. I have created a general include which include all my .h file such as: framework.h #include "A.h" #include "B.h" #include "C.h" each .h header are protected with include guard such as #ifndef A_HEADER #define A_HEADER ... #endif The issues is, I would like to be able to include "framework.h" inside all the sub .h such as, but it cause lots of compiler error: #ifndef A_HEADER #define A_HEADER #include "framework.h" ... #endif If instead I use the real header file for each sub header, and the framework.h for what ever use my framework it works fine.. I would just like to include the main header inside all my sub .h so I dont need to include all the dependency everytime. Thanks :)

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  • MVVM and Databinding with UniformGrid

    - by JP
    I'm trying to style the back of a WPF chart with some rectangles. I'm using MVVM, and I need the rectangles to be uniformly sized. When defined via Xaml, this works with a fixed "BucketCount" of 4: <VisualBrush> <VisualBrush.Visual> <UniformGrid Height="500" Width="500" Rows="1" Columns="{Binding BucketCount}"> <Rectangle Grid.Row="0" Grid.Column="0" Fill="#22ADD8E6" /> <Rectangle Grid.Row="0" Grid.Column="1" Fill="#22D3D3D3"/> <Rectangle Grid.Row="0" Grid.Column="2" Fill="#22ADD8E6"/> <Rectangle Grid.Row="0" Grid.Column="3" Fill="#22D3D3D3"/> </UniformGrid> </VisualBrush.Visual> <VisualBrush> How can I bind my ObservableCollection of Rectangles? There is no "ItemsSource" property on UniformGrid. Do I need to use an ItemsControl? If so, how can I do this? Thanks in advance.

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  • Database locking: ActiveRecord + Heroku

    - by JP
    I'm building a Sinatra based app for deployment on Heroku. You can imagine it like a standard URL shortener but where old shortcodes expire and become available for new URLs (I realise this is a silly concept but its easier to explain this way). I'm representing the shortcode in my database as an integer and redefining its reader to give a nice short and unique string from the integer. As some rows will be deleted, I've written code that goes thru all the shortcode integers and picks the first free one to use just before_save. Unfortunately I can make my code create two rows with identical shortcode integers if I run two instances very quickly one after another, which is obviously no good! How should I implement a locking system so that I can quickly save my record with a unique shortcode integer? Here's what I have so far: Chars = ('a'..'z').to_a + ('A'..'Z').to_a + ('0'..'9').to_a CharLength = Chars.length class Shorts < ActiveRecord::Base before_save :gen_shortcode after_save :done_shortcode def shortcode i = read_attribute(:shortcode).to_i return '0' if i == 0 s = '' while i > 0 s << Chars[i.modulo(CharLength)] i /= 62 end s end private def gen_shortcode shortcode = 0 self.class.find(:all,:order=>"shortcode ASC").each do |s| if s.read_attribute(:shortcode).to_i != shortcode # Begin locking? break end shortcode += 1 end write_attribute(:shortcode,shortcode) end def done_shortcode # End Locking? end end

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  • Opinion of Hosted SVN providers?

    - by JP
    What is your opinion of the various online Hosted SVN providers? How do they all compare? I'm looking for thoughts on Assembla, Unfuddle, BeanStalk, CVSDude, ProjectLocker, and any others that I forgot to mention. Thanks for your insight and input.

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  • Safe Cross Thread Signals/Slot C++

    - by JP
    It seem that the only implementation that provide Safe Cross-Thread Signals for both the Signal class and what's being called in the slot is QT. (Maybe I'm wrong?). But I cannot use QT in the project I'm doing. So how could I provide safe Slots call from a different thread (Using Boost::signals2 for example)? Are mutex inside the slot the only way? I think signals2 protect themself but not what's being done inside the slot. Thanks

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  • How to securely stream video from amazon S3

    - by JP.
    I have couple of copyright videos available on my S3 buckets. I want to stream them on my website, but at the same time. I don't want the users to rip the video from the video player. I tried to google about it but still i am not confident on this, coz i do not know the intricacies of options available like Server Side encryption None/ AES-256 2) A very interesting option is under Metadata tab - It shows couple of keys & Values. How can i use them to secure my video content? 3) Add more meta data and related options?

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  • Writing Ruby Libraries - hiding methods from outside the module

    - by JP
    Hi all, I'm writing a Ruby library which has a module with a bunch of classes inside it. Many of these classes need to be usable and modifiable by calling scripts, but I don't want (some of) the initializers to be visible/callable: module MyLib class Control def initialize # They can use this end def do_stuff Helper.new('things') end end class Helper # Shouldn't be visible def initialize(what) @what = what end def shout @what end end end c = MyLib::Control.new h = c.do_stuff p h.shout # => "things" # ^ All of this is desired # v This is undesirable p MyLib::Helper.new('!') # => <MyLib::Helper @what='!'> If it's a simple thing, then I'd also appreciate the generated RDoc not even include the .new method for the Helper class either. Any ideas? Thanks for reading!

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  • Nokogiri (Ruby) and XPath

    - by JP
    Does Nokogiri only support XPath 1.0? I'm trying to do simple string replacement in a value-of cell, like so (where element contains something like '* My string (useless text)') <xsl:value-of select="replace(element,'^\*\ (.+)\ \(.*\)$','\\1')"> Is this poorly formed XSL? Or is there a limitation with Nokogiri?

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  • Javascript Event for Select element Selection

    - by JP
    Hi everyone, I'm looking to find the Javascript Event I need to put into jQuery's .bind function in order to have the function triggered when a selection is made from a <select> element. At the moment I'm using .bind('change',function() { ...}) but I need the event to trigger when the selected option is chosen again. Any suggestions?

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  • Using xval with fields containing periods

    - by JP
    Hello, I have been using xVal with success for a while but this evening ran into an issue where a field containing a period would not be validated (client or server-side). I am using ASP.NET MVC2 and need to use the period syntax in cases where I am model binding to a list. In the below example I am using a textbox for the sake of simplicity: xVal.AttachValidator(null, { "Fields": [{ "FieldName": "entry[622592].Value", "FieldRules": [{ "RuleName": "Required", "RuleParameters": {}}]}] }, {}) <input type="text" class="text" name="entry[622592].Value"/> If I replace both instances of "entry[622592].Value" to something trivial like "test" then the validation works successfully, but if i leave it this way the validation never appears to fire... Has anyone run into this issue? Thanks in advance!

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  • Twitter + Grackle, determining the logged in user

    - by JP
    This is crazy, but I'm stumped! Once my user has logged into twitter via OAuth how do I determine their username using grackle? @twitter = Grackle::Client.new(:auth => { :type => :oauth, :consumer_key => consumer_key, :consumer_secret => consumer_secret, :token => @access_token.token, :token_secret => @access_token.secret }) username = @twitte.something_here?

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  • Ruby & ActiveRecord: referring to integer fields by (uniquely mapped) strings

    - by JP
    While its not my application a simple way to explain my problem is to assume I'm running a URL shortener. Rather than attempt to try and figure out what the next string I should use as the unique section of the URL, I just index all my URLs by integer and map the numbers to strings behind the scenes, essentially just changing the base of the number to, let's say, 62: a-z + A-Z + 0-9. In ActiveRecord I can easily alter the reader for the url_id field so that it returns my base 62 string instead of the number being stored in the database: class Short < ActiveRecord::Base def url_id i = read_attribute(:convo) return '0' if i == 0 s = '' while i > 0 s << CHARS[i.modulo(62)] i /= 62 end s end end but is there a way to tell ActiveRecord to accept Short.find(:first,:conditions=>{:url_id=>'Ab7'}), ie. putting the 'decoding' logic into my Short ActiveRecord class? I guess I could define my own def self.find_by_unique_string(string), but that feels like cheating somehow! Thanks!

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  • C++ enum casting and templates

    - by JP
    I get the following error with VS2008: Conversion to enumeration type requires an explicit cast (static_cast, C-style cast or function-style cast) When casting a down casting a ClassA to ClassA_1 and ClassA_1 is a templated class that received an enum for parameter such as: ClassA { virtual ~ClassA(){}; } template <class Param1> ClassA_1 : public ClassA { public: //constructor ClassA_1(Param1 p1) { _p1 = p1; } Param1 _p1; } So I have a upcasted ClassA a = new ClassA_1<myenum>(); When I need to do this: ClassA_1<myenum> a1 = (ClassA_1<myenum> a); // This fails ... The only way it works is: ClassA_1<int> a1 = (ClassA_1<int> a); but this break my template as it must always deal with int... How to properly cast a enum that is now a int, back into the enum?

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  • CSS: position:absolute inside position:relative, but not affecting parent?

    - by JP
    <style> #special p { display:none; } #special:hover p { display:block; } </style> <table> <tr> <td style="width:200px">Things</td> <td style="position:relative; width:220px"> <div style="position:absolute;right:0" id="special"> <img id="shows" /> <p>Variable width upto, say 600px (Will be hidden until this td is :hovered</p> </div> </td> </tr> </table> Can I make this work? Ie, can I make the #special p expand over the top of 'Things'? As I currently have it set up #special won't ever grow outside the 220px wide td. Any ideas?

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