scalaview’s gists

scalaview / gist:9eee2fa53eb506209f92

Created February 25, 2016 08:00 — forked from ibogun/gist:ec0a4005c25df57a1b9d

Installing gcc 4.9 & g++ 4.9 on Ubuntu 12.04 OR Ubuntu 14.04

	sudo apt-get install python-software-properties
	sudo add-apt-repository ppa:ubuntu-toolchain-r/test
	sudo apt-get update
	sudo apt-get install gcc-4.9
	sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.9 50
	sudo apt-get install g++-4.9
	sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-4.9 50

scalaview / productxxx.sql

Last active June 30, 2016 03:56

	SELECT history.*, history1.id AS h_id, (history1.retail_price - history.retail_price) AS t_price FROM product_price_histories AS history
	LEFT JOIN product_price_histories AS history1 ON history1.product_id = history.product_id
	LEFT JOIN products AS sku ON sku.id = history.product_id
	LEFT JOIN standard_products AS spu ON spu.id = sku.standard_product_id
	WHERE NOT EXISTS (
	SELECT t_h.id, t_h.created_at FROM product_price_histories AS t_h
	WHERE t_h.id != history.id
	AND t_h.product_id = history.product_id
	AND t_h.created_at >= '2016-03-29 08:28:54'
	AND t_h.created_at > history.created_at

scalaview / install_nvidia_driver_in_ubuntu1604.md

Last active April 24, 2017 05:59 — forked from terrydang/install_nvidia_driver_in_ubuntu1604.md

Ubuntu 16.04 安装英伟达（Nvidia）显卡驱动

配有英伟达显卡的主机，装完 Ubuntu 16.04 后出现闪屏现象，是由于没有安装显卡驱动。

显卡型号
NVIDIA Corporation GM204 [GeForce GTX 970]

scalaview / rails-aws-ses-ruby-aws-sdk-2.rb

Created May 11, 2017 09:19 — forked from mankind/rails-aws-ses-ruby-aws-sdk-2.rb

Getting started aws ses and demo using aws_sdk gem version 2

	Getting started aws ses
	http://codechannels.com/video/amazonwebservices/cloud/getting-started-with-amazon-ses/

	1. Verify email address

	In the sandbox you can send email only from emails yiu have verified.
	Go to email AWS SES then on the left clcik on 'verified senders'
	to start the verification process:
	a. click 'verify a ne sender'
	in the dialogue box add your email and click submit. you will receive

scalaview / redis-subscribe.rb

Created November 10, 2017 09:10

scalaview / genetic.js

Created November 13, 2017 09:20

	/***********************************************************************************
	/* Genetic Algorithm implementation
	/***********************************************************************************/

	var GeneticAlgorithm = function(max_units, top_units){
	this.max_units = max_units; // max number of units in population
	this.top_units = top_units; // number of top units (winners) used for evolving population

	if (this.max_units < this.top_units) this.top_units = this.max_units;

scalaview / callback.rb

Created November 15, 2017 09:28

scalaview / rate_limiter.lua

Created November 21, 2017 03:39

	--[[
	A lua rate limiter script run in redis
	use token bucket algorithm.
	Algorithm explaination
	1. key, use this key to find the token bucket in redis
	2. there're several args should be passed in:
	intervalPerPermit, time interval in millis between two token permits;
	refillTime, timestamp when running this lua script;
	limit, the capacity limit of the token bucket;
	interval, the time interval in millis of the token bucket;

scalaview / polipo.sh

Last active March 15, 2025 13:08

Convert Shadowsocks into an HTTP proxy

	First run polipo with parent proxy set to Shadowsocks:

	apt-get install polipo
	service polipo stop
	polipo socksParentProxy=localhost:1080


	Then you can play with the HTTP proxy:

	http_proxy=http://localhost:8123 apt-get update

scalaview / Casino.sol

Created March 15, 2018 15:18 — forked from anonymous/Casino.sol

Created using browser-solidity: Realtime Ethereum Contract Compiler and Runtime. Load this file by pasting this gists URL or ID at https://ethereum.github.io/browser-solidity/#version=soljson-v0.4.21+commit.dfe3193c.js&optimize=false&gist=

	require "redis"

	puts <<-EOS
	To play with this example use redis-cli from another terminal, like this:
	$ redis-cli publish one hello
	Finally force the example to exit sending the 'exit' message with:
	$ redis-cli publish two exit
	EOS

	redis = Redis.new