Skip to content

Instantly share code, notes, and snippets.

View hdchinh's full-sized avatar
🍀
I may be slow to respond.

hdchinh hdchinh

🍀
I may be slow to respond.
12 followers · 16 following
  • Viet Nam
  • 11:33 (UTC +07:00)
View GitHub Profile
@authorNari
authorNari / gist:1273387
Created October 9, 2011 06:53
rubyconf2011 note
OK, Let's begin. Hello, Everybody.
My name is Narihiro Nakamura.
Today, I'm talking about "Parallel worlds of CRuby's GC".
I'm very happy now, because I'm meeting attendee in rubyconf.
And, one of my dreams is to talk in rubyconf.
So, I'm very happy and exciting.
Today is my first presentation in English.
My English is not good.
@IanVaughan
IanVaughan / uninstall_gems.sh
Created June 9, 2012 20:37
Uninstall all rbenv gems
#!/usr/bin/env bash
uninstall() {
list=`gem list --no-versions`
for gem in $list; do
gem uninstall $gem -aIx
done
gem list
gem install bundler
}
@shunchu
shunchu / convert-seconds-into-hh-mm-ss-in-ruby.rb
Created July 25, 2012 07:58
Convert seconds into HH:MM:SS in Ruby
t = 236 # seconds
Time.at(t).utc.strftime("%H:%M:%S")
=> "00:03:56"
# Reference
# http://stackoverflow.com/questions/3963930/ruby-rails-how-to-convert-seconds-to-time
@jwo
jwo / mysql.database.yml
Last active October 4, 2024 14:01
Sample config/database.yml from Rails. Postgres, MySQL, and SQLite
#
# Install the MYSQL driver
# gem install mysql2
#
# Ensure the MySQL gem is defined in your Gemfile
# gem 'mysql2'
#
# And be sure to use new-style password hashing:
# http://dev.mysql.com/doc/refman/5.0/en/old-client.html
development:
@arjunvenkat
arjunvenkat / gist:1115bc41bf395a162084
Last active January 12, 2024 05:04
Seeding a Rails database with a CSV file

How to seed a Rails database with a CSV file

1. Setup

First, Create a folder inside of lib called seeds

Put your CSV file example.csv into the lib/seeds folder. In the example below, the file is called real_estate_transactions.csv

Make sure you've created a resource with the appropriate columns to match your seed data. The names don't have to match up.

@zaemiel
zaemiel / CKEditor installation and integration with Active Admin
Last active July 14, 2023 14:39
CKEditor installation and integration with Active Admin
1. Gemfile
gem 'ckeditor', github: 'galetahub/ckeditor'
2. bundle install
3. app/assets/javascripts/application.js
//= require ckeditor/init
4. config/initializers/active_admin.rb
@Bartuz
Bartuz / validate_with_matcher.rb
Last active August 17, 2023 14:15 — forked from otaviomedeiros/validate_with_matcher.rb
RSpec matcher for validates_with
# RSpec matcher for validates_with.
# https://gist.github.com/2032846
# Usage:
#
# describe User do
# it { should validate_with CustomValidator }
# end
RSpec::Matchers.define :validate_with do |expected_validator, options|
match do |subject|
@validator = subject.class.validators.find do |validator|
@TimothyRHuertas
TimothyRHuertas / Abstract.md
Last active August 24, 2019 08:28
Filter react-treebeard

Alex Curtis created react-treebeard a data driven tree view for React. I needed to enable users to filter the tree's nodes based on input text. To accomplish this I transform the tree's data using 2 functions when the filter changes and rerender the view:

  1. filterTree Given a tree return a new tree keeping only the nodes that meet one of the following conditions:
    1. Has matching text
    2. Has a parent with matching text
    3. Has a child with matching text
  2. expandNodesWithMatchingDescendants - Given a tree mark all the nodes with matching descendants as toggled

Here are the aformentioned functions.




  


  




    


          
    

      

        
        

          

              @eikes
          

          

            
                eikes
                / gist:5a64b661022c756bd6522ed94770e2a6
            
            

              Created
              July 4, 2016 14:02
            

              
                List of Ruby on Rails Timezone names and their alias
              
          

        

      

        

  

    
    


        



  


  

        

          
           ["Africa/Algiers", "West Central Africa"],
        

        

          
           ["Africa/Cairo", "Cairo"],
        

        

          
           ["Africa/Casablanca", "Casablanca"],
        

        

          
           ["Africa/Harare", "Harare"],
        

        

          
           ["Africa/Johannesburg", "Pretoria"],
        

        

          
           ["Africa/Monrovia", "Monrovia"],
        

        

          
           ["Africa/Nairobi", "Nairobi"],
        

        

          
           ["America/Argentina/Buenos_Aires", "Buenos Aires"],
        

        

          
           ["America/Bogota", "Bogota"],
        

        

          
           ["America/Caracas", "Caracas"],
        

  





    


  




    


          
    

      

        
        

          

              @jeffkreeftmeijer
          

          

            
                jeffkreeftmeijer
                / http_server.rb
            
            

              Last active
              October 11, 2024 12:42
            

          

        

      

        

  

    
    


        



  


  

        

          
          require 'socket'
        

        

          
          require 'rack'
        

        

          
          require 'rack/lobster'
        

        

          
          

        

        

          
          app = Rack::Lobster.new
        

        

          
          server = TCPServer.new 5678
        

        

          
          

        

        

          
          while session = server.accept
        

        

          
            request = session.gets
        

        

          
            puts request