Senthil_M senthilmk

INTRO

Concurrency is a domain I have wanted to explore for a long time because the locks and the race conditions have always intimidated me. I recall somebody suggesting concurrency patterns in golang because they said "you share the data and not the variables".

Amused by that, I searched for "concurrency in golang" and bumped into this awesome slide by Rob Pike: https://talks.golang.org/2012/waza.slide#1 which does a great job of explaining channels, concurrency patterns and a mini-architecture of load-balancer (also explains the above one-liner).

Let's dig in:

Goroutines

How to update the Go version

System: Debian/Ubuntu/Fedora. Might work for others as well.

1. Uninstall the exisiting version

As mentioned here, to update a go version you will first need to uninstall the original version.

To uninstall, delete the /usr/local/go directory by:

Guide to setting up InfluxData's TICK stack

InfluxData's T.I.C.K. stack is made up from the following components:

Component	Role
Telegraf	Data collector
InfluxDB	Stores data
Chronograf	Visualizer

Applied Functional Programming with Scala - Notes

1. Mastering Functions

A function is a mapping from one set, called a domain, to another set, called the codomain. A function associates every element in the domain with exactly one element in the codomain. In Scala, both domain and codomain are types.

val square : Int => Int = x => x * x

	package config

	import (
	"crypto/rand"
	"crypto/rsa"
	"crypto/x509"
	"encoding/pem"
	"io/ioutil"

	"github.com/CodeCollaborate/Server/utils"

	image: golang:1.7
	stages:
	- build
	- test

	before_script:
	- go get github.com/tools/godep
	- cp -r /builds/user /go/src/github.com/user/
	- cd /go/src/github.com/user/repo

	// npm install graphql graphql-tools graphql-subscriptions
	const { PubSub, SubscriptionManager } = require('graphql-subscriptions');
	const { makeExecutableSchema } = require('graphql-tools');

	// Our "database"
	const messages = [];

	// Minimal schema
	const typeDefs = `
	type Query {

	package main

	import (
	"io/ioutil"
	"log"
	"strings"
	"net/http"
	"encoding/json"
	"fmt"
	"time"

	import tensorflow as tf
	import numpy as np
	import time

	N=10000
	K=4
	MAX_ITERS = 1000

	start = time.time()

	#!/usr/bin/python
	# Script will list all instances, all security groups and their rules for desired profile
	# Before using script, you need to create "profile" file, which is ~/.aws/credentials where you put your AWS keys like this:
	#
	# [dev]
	# aws_access_key_id = *****
	# aws_secret_access_key = *****
	#
	# .. and then use it in this script