Murat Dzhulkuttiev dzhulk

Studying for a Tech Interview Sucks, so Here's a Cheat Sheet to Help

This list is meant to be a both a quick guide and reference for further research into these topics. It's basically a summary of that comp sci course you never took or forgot about, so there's no way it can cover everything in depth. It also will be available as a gist on Github for everyone to edit and add to.

Data Structure Basics

###Array ####Definition:

Stores data elements based on an sequential, most commonly 0 based, index.
Based on tuples from set theory.

	# Basic key operators to query the JSON objects :

	# #> : Get the JSON object at that path (if you need to do something fancy)
	# -> : Get the JSON object at that path (if you don't)
	# ->> : Get the JSON object at that path as text
	# {obj, n} : Get the nth item in that object

	# https://www.postgresql.org/docs/9.4/functions-json.html#FUNCTIONS-JSONB-OP-TABLE
	# Date
	# date before today

	package main

	import java.util.concurrent.ConcurrentHashMap

	import akka.actor._
	import io.netty.bootstrap.ServerBootstrap
	import io.netty.buffer.Unpooled
	import io.netty.channel.nio.NioEventLoopGroup
	import io.netty.channel.socket.SocketChannel
	import io.netty.channel.socket.nio.NioServerSocketChannel

	target hw1
	sources
	hw1.mlb
	hw1.main.sml
	end

	option compiler = mlton
	option output = hw1
	end

	cd ruby_build
	git pull
	./install.sh
	CONFIGURE_OPTS=--with-openssl-dir=`brew --prefix openssl` ruby-build --keep rbx-2.2.9 ~/.rubies/rbx

	(def common-words (-> (slurp "http://www.textfixer.com/resources/common-english-words-with-contractions.txt")
	(clojure.string/split #",")
	set))

	(def text (slurp "http://www.clearwhitelight.org/hitch/hhgttg.txt"))

	(->> text
	(re-seq #"[\w\|']+")
	(map #(clojure.string/lower-case %))
	(remove common-words)

	class A
	CONST = [1,2,3]

	def call_it
	CONST
	end

	def call_it2
	self.class::CONST
	end

	werty12?asdfg///?0987asdfghrexesx5
	werty12/asdfg//!/0987asdfghrexesx