ifyouseewendy’s gists

ifyouseewendy / pre-push.sh

Last active May 18, 2017 15:26

A hook script to do code checking, linting and testing before git push. Change pre-push.sh to pre-push before use.

	#!/bin/bash

	# http://misc.flogisoft.com/bash/tip_colors_and_formatting

	color_echo () {
	echo -e "\033[1;97;44m==> $1 \033[m"
	}

	color_echo "yarn lint"
	yarn lint

ifyouseewendy / use-sprockets-ouside-rack-application.rake

Created March 28, 2017 21:42

Use Sprockets outside Rack application. I'm working on a script project which is non Rack based. I want to send users an email notification when the script detects a state change. To use Sprockets outside a Rack application is not a common case, so there are not many articles talking about it online. You could count on this.

	desc 'Compile scss files using Sprockets

	+ source file: #{root}/lib/assets/stylesheets/application.scss,
	in which you could require the third party assets
	+ output file: #{root}/build/emai.css
	'
	task :compile do
	require 'third_party_assets'

	root = '~/Workspace/project/'

ifyouseewendy / index.html

Created March 19, 2017 16:03

Tic Tac Toe

	<div id="errors" style="
	background: #c00;
	color: #fff;
	display: none;
	margin: -20px -20px 20px;
	padding: 20px;
	white-space: pre-wrap;
	"></div>
	<div id="container"></div>
	<script>

ifyouseewendy / max_heap.rb

Created November 29, 2016 02:25

	# Use a max heap to sort an array
	def heap_sort!(array) # Use ! to represent inplace
	# setup
	n = array.length
	array.unshift nil

	# build
	(n/2).downto(1) do \|k\|
	sink(array, k, n)
	end

ifyouseewendy / boilerplate.elm

Created November 28, 2016 14:44

	port module Main exposing (..)

	import Html exposing (..)
	import Html.Events exposing (..)


	main =
	program
	{ init = init
	, view = view

ifyouseewendy / intro_to_elm.elm

Created July 23, 2016 15:51

Demo code from Richard Feldman's https://www.youtube.com/results?search_query=introduction+to+elm

	import Html exposing (..)
	import Html.Attributes exposing (..)
	import Html.Events exposing (..)
	import Html.App as Html

	-- model

	type alias Model =
	{
	shelves : Int,

ifyouseewendy / redis_client_ip.rb

Last active May 25, 2016 10:16

Get client ips of redis connection.

	#!/usr/bin/env ruby

	# Usage
	#
	# echo 'client list' \| redis-cli -h $HOST -p $PORT \| ./redis_client_ip.rb
	#
	# Reference
	#
	# http://www.jstorimer.com/blogs/workingwithcode/7766125-writing-ruby-scripts-that-respect-pipelines
	# http://redis.io/commands/client-list

ifyouseewendy / flatten_a_nesting_array.rb

Created March 14, 2016 07:17

Flatten an array of arbitrarily nested arrays of integers into a flat array of integers. e.g. [[1,2,[3]],4] -> [1,2,3,4].

	# In Ruby, we can just use Array#flatten
	#
	# def flatten(array)
	# array.flatten
	# end

	# In case you want a manmade version
	def flatten(array)
	array.reduce([]) do \|res, element\|
	Array === element ? res += flatten(element) : res << element

ifyouseewendy / pg.rake

Last active January 4, 2016 14:56 — forked from hopsoft/db.rake

Rails rake tasks for dump & restore of PostgreSQL databases

	# lib/tasks/pg.rake
	namespace :pg do
	desc "Dumps the database to backups"
	task :dump => :environment do
	cmd = nil
	with_config do \|app, host, db, user\|
	cmd = "pg_dump -h #{host} -d #{db} -U #{user} -Ft -v -c -f #{Rails.root}/public/resources/duoduo/db_backup/#{Time.now.strftime("%Y%m%d%H%M%S")}_#{db}.tar"
	end
	puts cmd
	exec cmd

ifyouseewendy / thread_pool.rb

Created December 30, 2015 11:45

	require 'thread'

	QUEUE_SIZE = 2
	POOL_SIZE = 5

	queue = SizedQueue.new(QUEUE_SIZE)

	producers = POOL_SIZE.times.map do
	Thread.new do
	item = rand(10)

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