Krishna Vangapandu krishnabhargav

static T[] Rotate(int n, T[] arr) { var temp = new T[arr.Length]; for (int i = 0; i < arr.Length; i++) { var destIndex = i - n; if (destIndex < 0) { var mul = -1 * destIndex / arr.Length; destIndex = (arr.Length * mul) + destIndex;

	type State<'S,'a> = 'S -> ('a * 'S)

	module State =
	let unit a : State<_,_> = fun s -> (a, s)

	let map<'s,'a,'b> (f : 'a -> 'b) (r : State<'s,'a>) =
	fun s ->
	let a,next = r(s)
	f(a), next

	git config --global diff.tool diffmerge
	git config --global difftool.diffmerge.cmd 'c:/tools/diffmerge/sgdm.exe \"$LOCAL\" \"$REMOTE\"'
	git config --global merge.tool diffmerge
	git config --global mergetool.diffmerge.cmd 'c:/tools/diffmerge/sgdm.exe --merge --result=\"$MERGED\" \"$LOCAL\" \"$BASE\" \"$REMOTE\"'
	git config --global mergetool.diffmerge.trustExitCode true

	1) explain the life of an http request.
	2) what does the FLP result teach us?
	3) what is a byzantine failure?
	4) explain CRDTs
	5) explain linearizability.
	6) how does DNS work?
	7) crash-stop vs crash-recovery?
	8) difference between soft and hard real time
	9) model GC in an eventually consistent system
	10) discuss clock skew, NTP, and AWS vs metal

	learning/hello-paket/HelloPaket master ✗ 103d ✖ ⚑ ◒
	▶ wget https://github.com/fsprojects/Paket/releases/download/0.30.3/paket.bootstrapper.exe
	--2015-02-23 21:20:58-- https://github.com/fsprojects/Paket/releases/download/0.30.3/paket.bootstrapper.exe
	Resolving github.com... 192.30.252.131
	Connecting to github.com\|192.30.252.131\|:443... connected.
	HTTP request sent, awaiting response... 302 Found
	Location: https://s3.amazonaws.com/github-cloud/releases/22755810/f2133dfe-bb80-11e4-9f9d-f777da134aed.exe?response-content-disposition=attachment%3B%20filename%3Dpaket.bootstrapper.exe&response-content-type=application/octet-stream&AWSAccessKeyId=AKIAISTNZFOVBIJMK3TQ&Expires=1424744518&Signature=v8wt6BYpfl2y0QOeTkmPQe18xUE%3D [following]
	--2015-02-23 21:20:58-- https://s3.amazonaws.com/github-cloud/releases/22755810/f2133dfe-bb80-11e4-9f9d-f777da134aed.exe?response-content-disposition=attachment%3B%20filename%3Dpaket.bootstrapper.exe&response-content-type=application/octet-stream&AWSAccess

	src/Unit-1/DoThis master ✗ 23h17m ◒
	▶ ls -l
	total 7456
	-rw-r--r-- 1 bhargava staff 182 Feb 23 08:16 App.config
	-rw-r--r-- 1 bhargava staff 1140 Feb 23 08:16 ConsoleReaderActor.cs
	-rw-r--r-- 1 bhargava staff 1092 Feb 23 08:16 ConsoleWriterActor.cs
	-rw-r--r-- 1 bhargava staff 1530 Feb 23 08:16 Program.cs
	drwxr-xr-x 3 bhargava staff 102 Feb 23 08:16 Properties
	-rw-r--r-- 1 bhargava staff 2595 Feb 23 08:16 WinTail.csproj
	-rw-r--r-- 1 bhargava staff 960 Feb 23 08:16 WinTail.sln

	let inline recordMetrics< ^T when ^T : (member MessageCountDetails : MessageCountDetails)
	and ^T : (member Path : string)> (all : ^T seq) =
	recordMetricsForPath (fun e -> (((^T : (member Path : string) e)))) all

	let rec gcd a b = match (a,b) with
	\| (x,y) when x = y -> x
	\| (x,y) when x > y -> gcd (x-y) y
	\| (x,y) -> gcd x (y-x)

	let lcm a b = a*b/(gcd a b)

	let sizeOfFolder folder =
	let allFiles = Directory.GetFiles(folder, ".", SearchOption.AllDirectories)
	let fileInfos = allFiles \|> Array.map (fun x -> new FileInfo(x))
	let allSizes = fileInfos \|> Array.map (fun x -> x.Length)
	Array.sum allSizes

	///This version requires explicit type annotations in the lambda
	let sizeOfFolder2 folder =
	let allFiles = Directory.GetFiles(folder, ".", SearchOption.AllDirectories)
	let fileInfos = Array.map (fun (x:string) -> new FileInfo(x)) allFiles

	val sqlContext = new org.apache.spark.sql.SQLContext(sc); //sc is SparkContext
	import sqlContext._

	case class Person(name: String, age: Int)

	val randomPeople = sc.parallelize(1 to 1000).map(i => Person("Yu_"+i,i))

	randomPeople.registerAsTable("people")

	val aged30 = sql("select * from people where age = 30")