elight

class User < ActiveRecord::Base
  # ... lots of persistence stuff
end

class GitHubUserProvisioner < SimpleDelegator
  def provision_with!(user_info, extra_user_hash)
    self.github_login = extra_user_hash['login']
    self.name = user_info['name']
    self.email = user_info['email']
    self.github_url = user_info['urls']['GitHub']

willurd

Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000

chrismccoy

# alias to edit commit messages without using rebase interactive
# example: git reword commithash message
reword = "!f() {\n  GIT_SEQUENCE_EDITOR=\"sed -i 1s/^pick/reword/\" GIT_EDITOR=\"printf \\\"%s\\n\\\" \\\"$2\\\" >\" git rebase -i \"$1^\";\n git push -f;\n}; f"

# count total commits in a repo
git rev-list --all --count

# edit all commit messages 
git rebase -i --root

demisx

belongs_to:

1. Assigning an object to a belongs_to association does not automatically save the object. It does not save the associated object either.

has_one:

1. When you assign an object to a has_one association, that object is automatically saved (in order to update its foreign key).
2. In addition, any object being replaced is also automatically saved, because its foreign key will change too
3. If either of these saves fails due to validation errors, then the assignment statement returns false and the assignment itself is cancelled.
4. If the parent object (the one declaring the has_one association) is unsaved (that is, new_record? returns true) then the child objects are not saved. They will automatically when the parent object is saved.

bmaupin

import re

history_snippet = '''Start-Date: 2014-08-25  12:52:37
Commandline: apt-get install -y openjdk-6-jdk openjdk-7-jdk icedtea-7-plugin
Install: openjdk-6-jre-lib:amd64 (6b32-1.13.4-4ubuntu0.14.04.1, automatic), icedtea-netx-common:amd64 (1.5-1ubuntu1, automatic), openjdk-6-jdk:amd64 (6b32-1.13.4-4ubuntu0.14.04.1), libxcb1-dev:amd64 (1.10-2ubuntu1, automatic), ttf-dejavu-extra:amd64 (2.34-1ubuntu1, automatic), icedtea-6-jre-cacao:amd64 (6b32-1.13.4-4ubuntu0.14.04.1, automatic), icedtea-7-plugin:amd64 (1.5-1ubuntu1), libxau-dev:amd64 (1.0.8-1, automatic), openjdk-6-jre-headless:amd64 (6b32-1.13.4-4ubuntu0.14.04.1, automatic), x11proto-core-dev:amd64 (7.0.24-1, automatic), libxt-dev:amd64 (1.1.4-1, automatic), openjdk-7-jdk:amd64 (7u65-2.5.1-4ubuntu1~0.14.04.1), libx11-dev:amd64 (1.6.2-1ubuntu2, automatic), x11proto-kb-dev:amd64 (1.0.6-2, automatic), openjdk-6-jre:amd64 (6b32-1.13.4-4ubuntu0.14.04.1, automatic), xtrans-dev:amd64 (1.3.2-1, automatic), libxdmcp-dev:amd64 (1.1.1-1, automatic), icedtea-netx:a

myusuf3

To remove a submodule you need to:

• Delete the relevant section from the .gitmodules file.
• Stage the .gitmodules changes git add .gitmodules
• Delete the relevant section from .git/config.
• Run git rm --cached path_to_submodule (no trailing slash).
• Run rm -rf .git/modules/path_to_submodule (no trailing slash).
• Commit git commit -m "Removed submodule "
• Delete the now untracked submodule files rm -rf path_to_submodule

morhekil

def stuff
  yield action: 'Boom', schedule: '7PM', color: :red, debug: true
end

# When a hash is yielded to a block, we can used named arguments to
# capture the keys we want, and an anonymous splat to ignore
# everything else
stuff { |action:, schedule:, **| p "Doing #{action} at #{schedule}" }

#

wevtimoteo

# Flags Ruby

# Sentinel to check that the rbenv-vars plugin is in use.
RBENV_VARS_ENABLED=1

# Ruby 2.1 GC reading:
# http://tmm1.net/ruby21-rgengc/
# http://thorstenball.com/blog/2014/03/12/watching-understanding-ruby-2.1-garbage-collector/
# http://samsaffron.com/archive/2013/11/22/demystifying-the-ruby-gc

dgoguerra

# prune branches deleted in origin
git remote prune origin

# prune tags
# http://stackoverflow.com/questions/1841341/remove-local-tags-that-are-no-longer-on-the-remote-repository
git fetch --prune <remote> '+refs/tags/*:refs/tags/*'

ajeetraina

version: '2'

services:

  elasticsearch:
    build:
      context: elasticsearch/
    volumes:
      - ./elasticsearch/config/elasticsearch.yml:/usr/share/elasticsearch/config/elasticsearch.yml:ro
    ports: