start new:
tmux
start new with session name:
tmux new -s myname
module Where | |
class <<self | |
attr_accessor :editor | |
def is_proc(proc) | |
source_location(proc) | |
end | |
def is_method(klass, method_name) | |
source_location(klass.method(method_name)) |
require 'active_record' | |
require 'arel' | |
# Ruby-like syntax in AR conditions using the underlying Arel layer (Rails >= 3.0). | |
# | |
# What you would usually write like this: | |
# | |
# User.where(["users.created_at > ? AND users.name LIKE ?", Date.yesterday, "Mary"]) | |
# | |
# can now be written like this (note those parentheses required by the operators precedences): |
//------------------------------------------------------------- | |
// | |
// Hypothesis: | |
// | |
// Promises/A is a Monad | |
// | |
// To be a Monad, it must provide at least: | |
// - A unit (aka return or mreturn) operation that creates a corresponding | |
// monadic value from a non-monadic value. | |
// - A bind operation that applies a function to a monadic value |
| 😄 | 😆 | 😊 | 😃 |
😩 | 😔 | 😞 | 😖 | 😨 | 😰 | 😣 | 😢 | 😭 | 😂 | 😲 | 😱 | | 😫 | 😠 | 😡 | 😤 | 😪 | 😋 | 😷
😎 | 😵 | 👿 | 😈 | 😐 | 😶 | 😇 | 👽 | 💛 | 💙 | 💜 | ❤️ | 💚 | 💔 | 💓 | 💗 | 💕 | 💞 | 💘 | ✨
""" | |
Copyright (c) 2012 Zohaib Sibte Hassan | |
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: | |
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. | |
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR |
// knockout 2.3.0 | |
ko.utils.addOrRemoveItem = function (array, value, included) { /* .. */ } | |
ko.utils.anyDomNodeIsAttachedToDocument = function (nodes) { /* .. */ } | |
ko.utils.arrayFilter = function (array, predicate) { /* .. */ } | |
ko.utils.arrayFirst = function (array, predicate, predicateOwner) { /* .. */ } |
Magic words:
psql -U postgres
Some interesting flags (to see all, use -h
or --help
depending on your psql version):
-E
: will describe the underlaying queries of the \
commands (cool for learning!)-l
: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)(by @andrestaltz)
If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.
# Enables PostgreSQL interval datatype support (as ActiveSupport::Duration) in Ruby on Rails 4.1. | |
# Based on https://gist.github.com/clarkdave/6529610 | |
require 'active_support/duration' | |
# add a native DB type of :interval | |
ActiveRecord::ConnectionAdapters::PostgreSQLAdapter::NATIVE_DATABASE_TYPES[:interval] = { name: 'interval' } | |
# add the interval type to the simplified_type list. because this method is a case statement | |
# we can't inject anything into it, so we create an alias around it so calls to it will call |