zhengjia

=Navigating=
    visit('/projects')
    visit(post_comments_path(post))

=Clicking links and buttons=
    click_link('id-of-link')
    click_link('Link Text')
    click_button('Save')
    click('Link Text') # Click either a link or a button
    click('Button Value')

lfender6445

Pry Cheat Sheet

• Youtube Tutorial 2013

Command Line

• pry -r ./config/app_init_file.rb - load your app into a pry session (look at the file loaded by config.ru)
• pry -r ./config/environment.rb - load your rails into a pry session

Debugger

steinwaywhw

• Use curl to get the JSON response for the latest release
• Use grep to find the line containing file URL
• Use cut and tr to extract the URL
• Use wget to download it

curl -s https://api.github.com/repos/jgm/pandoc/releases/latest \
| grep "browser_download_url.*deb" \
| cut -d : -f 2,3 \
| tr -d \" \

palkan

-- show running queries (9.2)
SELECT pid, age(query_start, clock_timestamp()), usename, query 
FROM pg_stat_activity 
WHERE query != '<IDLE>' AND query NOT ILIKE '%pg_stat_activity%' 
ORDER BY query_start desc;

-- kill running query
SELECT pg_cancel_backend(procpid);

-- kill idle query

palkan

Installation

Go to the official website and choose your OS.

MacOS

Docker for Mac has a problem is the disk IO performance (see docker/for-mac#77).

There is a fix (https://github.com/IFSight/d4m-nfs) which makes Docker use NFS instead of OSXFS.

Ceroce

-module(recursion).
-export([fib/1, fibtail/1, fibtail/3, isPerfect/1]).

fib(0) ->
    0;
fib(1) ->
    1;
fib(N) when N > 0 ->
    fib(N-1)+fib(N-2).

cheeaun

RedDotRubyConf 2017 links & resources

📆 Jun 22-23, 2017

🌏 Web site: http://reddotrubyconf.com/ Twitter: http://twitter.com/reddotrubyconf

💁 Ping me @cheeaun on Twitter or leave a comment below if you found some awesome stuff for #rdrc2017. This gist will be updated whenever there's new stuff.

🕙 Previously, on RedDotRubyConf...

Earendil95

Description

This hooks will remind you to reference task in your commit, and remember your task ref for branch. Your commit messages will have style "[reference] message"

Usage

1. Create two files in your repo - e.g. [PROJECT_ROOT]/hooks/prepare-commit-msg.rb and [PROJECT_ROOT]/hooks/post-checkout.rb
2. Copy to first file (here will assume that this is a [PROJECT_ROOT]/hooks/prepare-commit-msg.rb):

#!/usr/bin/env ruby

joker1007

class Object
  def defer(method, *args)
    @current_fibers ||= []
    @tracepoint ||= TracePoint.trace(:return) do |tp|
      @current_fibers.reverse_each do |fib|
        fib.resume
      end
    end

    @current_fibers << Fiber.new do

RStankov

module ApplicationPolicy
  READ = :read

  MANAGE = :manage
  MANAGE_FIELD = { parent_role: MANAGE } # NOTE(rstankov): Used for GraphQL fields

  UPDATE = :update

  MODERATE = :moderate