Sourabh Upadhyay sourabh-upadhyay

decorators

concerns

Rails features (4 & 5)

Blocks

When to use lambda

http://jsonplaceholder.typicode.com/

Number	Octal	Permission Representation Ref
0	No permission	---
1	Execute permission	--x
2	Write permission	-w-
3	Execute and write permission: 1 (execute) + 2 (write) = 3	-wx
4	Read permission	r--
5	Read and execute permission: 4 (read) + 1 (execute) = 5	r-x
6	Read and write permission: 4 (read) + 2 (write) = 6	rw-
7	All permissions: 4 (read) + 2 (write) + 1 (execute) = 7	rwx

Install AWS CLI using the OS X Bundled Installer.

python --version

Now download the AWSCLI installer using the following command:

curl "https://s3.amazonaws.com/aws-cli/awscli-bundle.zip" -o "awscli-bundle.zip"

Unzip the package

unzip awscli-bundle.zip

Run the install executable and test the AWS CLI installation

sudo ./awscli-bundle/install -i /usr/local/aws -b /usr/local/bin/aws

Configure AWS credentials

If we are working with uuid (PostgreSQL arrays work with Rails) and you need to compare values in Rails convetion then you may need this.

rails/rails#13127 (comment) (rails/rails#13127 (comment))

Key features of Assets pipeline

Concatenate assets (Which can reduce the number of requests that a browser makes to render a web page) (Sprockets concatenates all JavaScript files into one master .js file and all CSS files into one master .css file)
Asset minification or compression
Coding assets via a higher level languages (SASS for CSS, CoffeeScript for JS, and ERB for both by default)

What is Fingerprinting and Why Should I Care?

In order to enable rubocop for your sublime package 3 you first need to make sure the control package of sublime is installed on your sublime package. To check for the control package Way 1: Step 1 -> open sublime package 3 and press ctrl + shift + p wait for some time (hardly 5 seconds) it will open a text field in the sublime package. Step 2 -> Type install if you see Package Control : Install package then the control package is install.

	package main

	import "fmt"
	import "reflect"

	func contains(val interface{}, array interface{}) (exists bool, index int) {
	exists = false
	index = -1

	switch reflect.TypeOf(array).Kind() {

	#Simple monkey patch would work

	module ActiveRecord
	Base.send :attr_accessor, :_row_

	module Associations
	class JoinDependency
	JoinBase && class JoinPart
	def instantiate_with_row(row, *args)
	instantiate_without_row(row, *args).tap { \|i\| i._row_ = row }

	## Show current git branch on terminal
	#### Add this line of code at the end on file .bashrc in Home directory

	export GIT_PS1_SHOWDIRTYSTATE=1
	export PS1='\[\033[01;32m\]\u@\h\[\033[01;34m\] \w\[\033[00;31m\]$(__git_ps1)\[\033[00;34m\] \$\[\033[00m\] '