Siva byteshiva

Transfer a gist to a GitHub repository

clone the gist

git clone https://gist.github.com/ishu3101/6fb35afd237e42ef25f9

rename the directory

mv 6fb35afd237e42ef25f9 ConvertTo-Markdown

change the working directory to the newly renamed directory

cd ConvertTo-Markdown

Resize a Hard Disk for a Virtual Machine

Our Virtual Machines are provisioned using Vagrant from a Linux base box to run using VirutalBox. If the Hard Disk space runs out and you cannot remove files to free-up space, you can resize the Hard Disk using some VirtualBox and Linux commands.

Some assumptions

The following steps assume you've got a set-up like mine, where:

create-react-native-app purescript-app; cd purescript-app
pulp init --force
pulp build
src/Main.js

var React = require("react");
var RN = require("react-native");

exports.text = function(props){

Requirements to Consider for Go 2 Error Handling

Towards consensus on the requirements for a new errors idiom.

The Go2 Error Handling Overview gives only four rather vague "goals": small-footprint error checks, developer-friendly error handlers, explicit checks & handlers, and compatibility with existing code. And previously @ianlancetaylor made this similar list: golang/go#21161 (comment)

As of this writing, there are almost forty counter-proposals on the

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

	# Make sure you grab the latest version
	curl -OL https://github.com/google/protobuf/releases/download/v3.2.0/protoc-3.2.0-linux-x86_64.zip

	# Unzip
	unzip protoc-3.2.0-linux-x86_64.zip -d protoc3

	# Move protoc to /usr/local/bin/
	sudo mv protoc3/bin/* /usr/local/bin/

	# Move protoc3/include to /usr/local/include/

	package com.ssaurel.audiorecorder;

	import android.media.MediaPlayer;
	import android.media.MediaRecorder;
	import android.os.Bundle;
	import android.os.Environment;
	import android.support.v7.app.AppCompatActivity;
	import android.view.View;
	import android.widget.Button;
	import android.widget.Toast;

	Latency Comparison Numbers (~2012)
	----------------------------------
	L1 cache reference 0.5 ns
	Branch mispredict 5 ns
	L2 cache reference 7 ns 14x L1 cache
	Mutex lock/unlock 25 ns
	Main memory reference 100 ns 20x L2 cache, 200x L1 cache
	Compress 1K bytes with Zippy 3,000 ns 3 us
	Send 1K bytes over 1 Gbps network 10,000 ns 10 us
	Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD

	Please read original blog post for reference:
	http://blog.process-one.net/embedding-ejabberd-into-an-elixir-phoenix-web-application/