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package com.vaani.hackerrank;

import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

/**
 * Created by mdev on 4/8/15.
 */

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package com.vaani.java.gc;

import java.io.File;
import java.io.IOException;
import java.io.RandomAccessFile;
import java.nio.MappedByteBuffer;
import java.nio.channels.FileChannel;

public class MappedFileGc {
	public static void main(String[] args) throws IOException {

kinshuk4

Setting up the VirtualEnv with Brew

Here we will use Homebrew as my package manager for Unix utilities on OSX. Homebrew seems to install less dependencies than Macports or Fink.

Also, most of my Python development has settled on Python 2.7 and occasionally Python 3 for tasks that don’t require external libraries that only run on Python 2.x. So for me, an easier install with less gunk on my hard drive is a fair trade for losing the latest updates to Python 2.4, 2.5, and 2.6.

In this post, I’ll describe my setup.

The first thing to do is uninstall Macports if present. Homebrew has fairly up-to-date versions all of the Unix packages I use on a daily basis, including git, subversion, bash_completion, Python, Qt, PyQt, and their supporting libraries. As such, I don’t need Macports taking up additional hard drive space and potentially causing conflicts with Homebrew’s packages.

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Git Cheat Sheet

Visit my blog or connect with me on Twitter

Overview

Centralized version control - SVN,Perforce Localized version control - Git,Mercurial

Git creates only 1 .git folder, while svn creates lots of svn folder.

Commands

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We have already seen git commands here, hence won't be repeating it.

Change to your project root folder and do this initially to get your repo set up

# Link remote repo with you local repo.
git remote add alias <Your repo URL>

# Example - Note origin instead of alias
git remote add origin <Your repo URL>

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#ELK Stack

The ELK stack contains Elasticsearch, Logstash, and Kibana:

• Elasticsearch for deep search and data analytics
• Logstash for centralized logging, log enrichment and parsing
• Kibana for powerful and beautiful data visualizations

The architecture ELK:

send data storage data reads data 

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Erlang for beginners

• Why erlang?
• Why Use Erlang?
• When would you choose Erlang?
• Erlang: For an absolute beginner
• An Erlang OTP tutorial for beginners
• A Beginners Guide to Erlang
• What is the best way to learn Erlang?
• The Joy of Erlang; Or, How To Ride A Toruk

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first ruby tutrial

Environment Setup

• install XCode: search 'xcode' in app store and install
• install 'command line tools': after XCode installed in XCode, install from it's preference pane
• install home brew: open up terminal, and type ruby -e "$(curl -fsSL https://raw.github.com/mxcl/homebrew/go)"
• install rbenv: open up terminal, and type brew install rbenv
• as said, echo 'eval "$(rbenv init -)"' >> .bashrc', then close terminal window and open again
• install ruby-build: in the terminal, and type brew install ruby-build

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Go Tutorials

This gist documents steps taken to troubleshoot or fix issues raised when following the [WomenWhoGo Tutorials] (https://github.com/womenwhogonyc/Go-Tutorial)

Installing Go

Install Go:

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ActiveRecord

Let's create a MovieDB app to learn AR :)

The Tables

The Models

$ rails generate model genre name:string

$ rails g model movie name:string release_date:date revenue:decimal genre_id:integer