Here are the different values that the s, stat and state output specifiers (header "STAT" or "S") will display to describe the state of a process.
| CODE | Meaning |
|---|---|
| D | Uninterruptible sleep (usually IO) |
| R | Running or runnable (on run queue) |
| S | Interruptible sleep (waiting for an event to complete) |
| T | Stopped, either by a job control signal or because it is being traced. |
| W | paging (not valid since the 2.6.xx kernel) |
| # This is a skeleton for testing models including examples of validations, callbacks, | |
| # scopes, instance & class methods, associations, and more. | |
| # Pick and choose what you want, as all models don't NEED to be tested at this depth. | |
| # | |
| # I'm always eager to hear new tips & suggestions as I'm still new to testing, | |
| # so if you have any, please share! | |
| # | |
| # @kyletcarlson | |
| # | |
| # This skeleton also assumes you're using the following gems: |
If you have two days to learn the very basics of modelling, Domain-Driven Design, CQRS and Event Sourcing, here's what you should do:
In the evenings read the [Domain-Driven Design Quickly Minibook]{http://www.infoq.com/minibooks/domain-driven-design-quickly}. During the day watch following great videos (in this order):
| ################################################################## | |
| # /etc/elasticsearch/elasticsearch.yml | |
| # | |
| # Base configuration for a write heavy cluster | |
| # | |
| # Cluster / Node Basics | |
| cluster.name: logng | |
| # Node can have abritrary attributes we can use for routing |
create different ssh key according the article Mac Set-Up Git
$ ssh-keygen -t rsa -C "your_email@youremail.com"
| ## Prepare ################################################################### | |
| # Remove RVM | |
| rvm implode | |
| # Ensure your homebrew is working properly and up to date | |
| brew doctor | |
| brew update | |
| ## Install ################################################################### |
| # in spec/support/omniauth_macros.rb | |
| module OmniauthMacros | |
| def mock_auth_hash | |
| # The mock_auth configuration allows you to set per-provider (or default) | |
| # authentication hashes to return during integration testing. | |
| OmniAuth.config.mock_auth[:twitter] = { | |
| 'provider' => 'twitter', | |
| 'uid' => '123545', | |
| 'user_info' => { | |
| 'name' => 'mockuser', |
| # WAIT! Do consider that `wait` may not be needed. This article describes | |
| # that reasoning. Please read it and make informed decisions. | |
| # https://www.varvet.com/blog/why-wait_until-was-removed-from-capybara/ | |
| # Have you ever had to sleep() in Capybara-WebKit to wait for AJAX and/or CSS animations? | |
| describe 'Modal' do | |
| should 'display login errors' do | |
| visit root_path |
| literally always have to look up the meaning of :limit in migrations when it comes to integer values. Here's an overview. Now let's memorise it (oh, this works for MySQL, other databases may work differently): | |
| :limit Numeric Type Column Size Max value | |
| 1 tinyint 1 byte 127 | |
| 2 smallint 2 bytes 32767 | |
| 3 mediumint 3 byte 8388607 | |
| nil, 4, 11 int(11) 4 byte 2147483647 | |
| 5..8 bigint 8 byte 9223372036854775807 | |
| Note: by default MySQL uses signed integers and Rails has no way (that I know of) to change this behaviour. Subsequently, the max. values noted are for signed integers. |
| ;; 12.4 Rearranging words | |
| ;; a 'word' is either | |
| ;; 1 - empty, or | |
| ;; 2 - (cons a w) where a is a symbol | |
| ;; ('a, 'b,..., 'z) and w is a word | |
| ;; examples: | |
| (define noword empty) | |
| (define red (cons 'r (cons 'e (cons 'd empty)))) |