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# Path to your oh-my-zsh installation.
export ZSH=~/.oh-my-zsh

# Set name of the theme to load.
# Look in ~/.oh-my-zsh/themes/
# Optionally, if you set this to "random", it'll load a random theme each
# time that oh-my-zsh is loaded.
ZSH_THEME="robbyrussell"

# Uncomment the following line to use case-sensitive completion.

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Linux and Bash

Lets talk about Linux and Bash.

Notes

Notes were taken from edx.org of LFS101x Introduction to Linux.

Date: Sun Sep 28 00:30:48 EDT 2014

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Zip excluding specific directories

Exclude .git file and node_modules directory

$ zip -r9 [target_file] [source_file] -x *.git* node_modules/\*

Exclude .git file and files in node_modules directory, but keep node_modules directory

$ zip -r9 [target_file] [source_file] -x *.git* node_modules/**\*

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Download videos from egghead

Go to the egghead website, i.e. Building a React.js App

run

$.each($('h4 a'), function(index, video){
  console.log(video.href);
});

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#File Magic Numbers

Magic numbers are the first bits of a file which uniquely identify the type of file. This makes programming easier because complicated file structures need not be searched in order to identify the file type.

For example, a jpeg file starts with ffd8 ffe0 0010 4a46 4946 0001 0101 0047 ......JFIF.....G ffd8 shows that it's a JPEG file, and ffe0 identify a JFIF type structure. There is an ascii encoding of "JFIF" which comes after a length code, but that is not necessary in order to identify the file. The first 4 bytes do that uniquely.

This gives an ongoing list of file-type magic numbers.

##Image Files

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JSON Parser in Java

Reference

Implementing High Performance Parsers in Java

How do I write my own parser? (for JSON)

RavenDB: Let us write our own JSON Parser, NOT

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""" Calculate the subnet mask, its binary representation, number of host and
	network bits, and the total number of hosts for a given CIDR address.
		Usage: python cidr.py [cidr]
		Notes: Pipe the command to jq to pretty print the JSON. Python 2 or 3 compatible.
		Examples:
		python cidr.py 10.0.0.0/24
		python cidr.py 172.0.0.0/16 | jq
"""

from __future__ import print_function

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JavaScript

Lets talk about how to write modules in JavaScript.

AMD vs CommonJS

AMD and CommonJS are the two most popular JavaScript conventions for writing modules.

Asynchronous Module Definition (AMD)

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# Sample
Sample Exam Questions – InfoVis
1. What info viz principles are employed in the application of hyperbolic tree views?
2. What are two advantages and two drawbacks of the treemap method of visualization?
3. Define the 'magic lens' technique and explain how can it be used for information
visualization.
4. Explain the difference between Information Visualization and Scientific Visualization.
5. Give two ways Information Visualization improves cognition.
6. Explain the difference between Overview and Detail and Focus + Context. Give an
example of each.

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#!/usr/bin/env python

def main():
    n = input('Find the next prime number greater great than: ')
    print find_next_prime(n+1)

def find_next_prime(n):
    return find_prime_in_range(n, 2*n)

def find_prime_in_range(a, b):