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Building Web and Mobile apps

Andrei Kaleshka ka8725

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Building Web and Mobile apps
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@rahularity
rahularity / work-with-multiple-github-accounts.md
Last active February 6, 2026 11:02
How To Work With Multiple Github Accounts on your PC

How To Work With Multiple Github Accounts on a single Machine

Let suppose I have two github accounts, https://github.com/rahul-office and https://github.com/rahul-personal. Now i want to setup my mac to easily talk to both the github accounts.

NOTE: This logic can be extended to more than two accounts also. :)

The setup can be done in 5 easy steps:

Steps:

  • Step 1 : Create SSH keys for all accounts
  • Step 2 : Add SSH keys to SSH Agent
@wteuber
wteuber / encrypt_decrypt.rb
Last active February 2, 2026 15:13
Basic encrypt and decrypt Strings in Ruby with deterministic salt or IV, generate and store random salt and IV in production
require 'openssl'
class String
CIPHER_NAME = 'aes-256-cbc'.freeze
PBKDF_ITER = 200_000
KEY_LEN = 32 # 256 bits
SALT_CONST = "fixed-global-salt-v1".freeze
IV_SALT_CONST = "fixed-iv-salt-v1".freeze
def encrypt(password)
@lucasfais
lucasfais / gist:1207002
Created September 9, 2011 18:46
Sublime Text 2 - Useful Shortcuts

Sublime Text 2 โ€“ Useful Shortcuts (Mac OS X)

General

โŒ˜T go to file
โŒ˜โŒƒP go to project
โŒ˜R go to methods
โŒƒG go to line
โŒ˜KB toggle side bar
โŒ˜โ‡งP command prompt
@JunichiIto
JunichiIto / alias_matchers.md
Last active September 5, 2025 14:24
List of alias matchers in RSpec 3

This list is based on aliases_spec.rb.

You can see also Module: RSpec::Matchers API.

matcher aliased to description
a_truthy_value be_truthy a truthy value
a_falsey_value be_falsey a falsey value
be_falsy be_falsey be falsy
a_falsy_value be_falsey a falsy value
@mikhailov
mikhailov / 0. nginx_setup.sh
Last active August 29, 2025 05:48
NGINX+SPDY with Unicorn. True Zero-Downtime unless migrations. Best practices.
# Nginx+Unicorn best-practices congifuration guide. Heartbleed fixed.
# We use latest stable nginx with fresh **openssl**, **zlib** and **pcre** dependencies.
# Some extra handy modules to use: --with-http_stub_status_module --with-http_gzip_static_module
#
# Deployment structure
#
# SERVER:
# /etc/init.d/nginx (1. nginx)
# /home/app/public_html/app_production/current (Capistrano directory)
#
@brianstorti
brianstorti / priority_queue.rb
Last active June 9, 2025 20:10
Priority queue implementation in Ruby
class PriorityQueue
attr_reader :elements
def initialize
@elements = [nil]
end
def <<(element)
@elements << element
bubble_up(@elements.size - 1)
@iboard
iboard / ruby-destructor-example.rb
Last active March 21, 2025 09:32
Ruby 'Destructor' example.
class Foo
attr_reader :bar
def initialize
@bar = 123
ObjectSpace.define_finalizer( self, self.class.finalize(bar) )
end
def self.finalize(bar)
proc { puts "DESTROY OBJECT #{bar}" }
end
@dan-palmer
dan-palmer / swap-commands.txt
Created July 10, 2012 09:24
Enable Disable OSX Swap etc
# check swap usage
sysctl vm.swapusage
# disable encrypted swap - SNOW LEOPARD
sudo defaults write /Library/Preferences/com.apple.virtualMemory UseEncryptedSwap -boolean no
# disable encrypted swap - LION
sudo defaults write /Library/Preferences/com.apple.virtualMemory DisableEncryptedSwap -boolean yes
# disable swap
@Odaeus
Odaeus / application_controller.rb
Last active February 12, 2025 06:24
Alternative to Rails' sharing of instance variables between controller and views.
class ApplicationController < ActionController::Base
# Creates an accessor which is exposed to the view
def self.view_accessor(*names)
attr_accessor *names
helper_method *names
end
end
@maxim
maxim / rails_load_path_tips.md
Last active January 9, 2025 00:59
How to use rails load paths, app, and lib directories.

In Rails 3

NOTE: This post now lives (and kept up to date) on my blog: http://hakunin.com/rails3-load-paths

If you add a dir directly under app/

Do nothing. All files in this dir are eager loaded in production and lazy loaded in development by default.

If you add a dir under app/something/