I currently have an Apple Push Notification running on my server in Ruby. I'd like to get one going in Erlang as I'd like to use a supervisor to keep watch over it. Does anyone have any code that they could help me with? Here's my Ruby code. One thing I do not like about this current implementation is that it does not seem to stay ...
In Ruby, what is the simplest way to execute a local Linux command stored in a string while catching any potential exceptions that are thrown and logging the output of the Linux command and any thrown errors to a common log file? ...
I want to store several different methods in an array in Ruby. Suppose I want to store the type method twice: [type, type] doesn't store two entries of type in an array; it executes type twice, and stores the results in the array. how do I refer explicitly to the method object itself? (this is just a simplified version of what I real...
I'm trying to connect to SQL Server on Ubuntu 9.04 using Ruby. I translated and followed all the steps outlined in getting OSX talking to SQL Server from here: http://toolmantim.com/articles/getting_rails_talking_to_sqlserver_on_osx_via_odbc Everything is working on the FreeTDS and unixODBC end. I can see and query the database using t...
def any? if block_given? method_missing(:any?) { |*block_args| yield(*block_args) } else !empty? end end In this code from ActiveRecord, what is the purpose of a yield statement that exists within a block? ...
Didn't find any from their website. I mostly just trying to see which one is worth going with(RIA of course). thanks ...
Groovys' NodeBuilder uses def someBuilder = new NodeBuilder() someBuilder.people(kind:'folks', groovy:true) { person(x:123, name:'James', cheese:'edam') { project(name:'groovy') project(name:'geronimo') } person(x:234, name:'bob', cheese:'cheddar') { project(name:'groovy') project(name:'drools') } } whereas ...
I have a current implementation of will_paginate that uses the paginate_by_sql method to build the collection to be paginated. We have a custom query for total_entries that's very complicated and puts a large load on our DB. Therefore we would like to cut total_entries from the pagination altogether. In other words, instead of the t...
On windows, I can run my ruby script like this: > ruby myscript.rb but I want to set things up so that I can just do this instead?.. > myscript.rb How do I do this? I know it's possible because I've recently moved from one PC that had this set up to a new PC that doesn't (yet). ...
def test_method ["a", "b", "c"].map {|i| yield(i) } end If I call test_method like this: p test_method {|i| i.upcase } # => ["A", "B", "C"] Why do I need the {|i|} inside the block, instead of just saying this: p test_method { i.upcase } The reason I think so is because when yield is called in test_method, we already have an {|...
Instead of doing this in the cache_money.rb initializer class ActiveRecord::Base is_cached :repository => $cache end I want to be able to selectively cache only certain models (the reason being our User model breaks memcached because it's generally too large to be serialized properly). class User < AR::Base is_cached :repository ...
I'm writing my own blog (every one should do this once) and the project for this week is to automatically send (trackback || pingback) requests to pages to which I am linking. I'm writing in ruby, but would also like general heuristics. I would like some advice on the following: 1) What is the best way to pull RDF out of a document when...
class Observer def initialize(&block) instance_eval(&block) if block_given? end end I'm wondering what assumption is made here about the type of block that is being used with 'initialize'. Since instance_eval is called, this means the block is evaluated in the context of the class Observer. Why would it do that, a...
I have been learning to fake posting forms using Ruby's Http class, but now I need to post a file (as in faking a form submission where one of the fields is input type="file"). Anyone know how to do this? NB It's not essential I use the Http class, just that I can post files. ...
Using Ruby/RoR - The year is a string in the model/view. How do I validate that the user entered string is a valid gregorian calendar year? ...
I'm trying to evaluate Ruport for use in my Rails app, but am not sure how to take a series of records with date/time stamps and group them via Ruport's grouping functions. I'm open to other/better methods to do this same grouping if Ruport doesn't make sense. ...
Is there any reason to do use block initialization, like this: x = Observer.new do add_event(foo) some_other_instance_method_on_observer self.some_attribute = something end instead of initializing attributes using the dot operator on an instance variable like this: x = Observer.new x.add_event(foo) x.some_other_instance_method_...
If I have a self-referential Topic class and I want to recursively loop through all of my subtopics, what would be a good Ruby way to do that: @category.topics.all(:parent_id => topic.id).each do |subtopic| subtopic.delete_tags @category.topics.all(:parent_id => subtopic.id).each do |subsubtopic| subsubtopic.delete_tags ...
I've done very little work with Ruby, and have an app I've written in PHP. I would like to add some functionality which is available in open sourced Ruby code. I could either try to translate the Ruby to PHP, or try mixing the two. Though I think the mixing part would be somewhat silly. I believe my options are to either mix ruby wi...
I found cool article on Creating cross platform GUI's with IronRuby where someone re-created the Shoes DSL by _why the lucky stiff in IronRuby. Awesome right! So, I downloaded the IronRuby binaries and the code from the article and ran the following command: c:\IronRuby\bin\ir hello_world.rb But I get the following error: :0:in ...