t32k

foobar, foo, bar, baz, qux, quux, corge, grault, garply, waldo, fred, plugh, xyzzy, thud

• ASCII.jp：技術文書に頻出する「foobar」って何だ？｜今さら聞けないIT英語

jdegoes

Introduction

LambdaConf has multiple tracks, so no attendee can possibly attend all sessions.

Yet, we'd like to schedule the sessions to maximize attendee happiness (for some definition of "maximum" and "happiness").

Sounds like a job for functional programming!

Your mission, should you choose to accept it, is to write a small functional program to produce an "optimal" schedule (your schedule may have any number of tracks you want -- you do not have to stick with 3 or 4).

johnynek

use std::comm::{Receiver, channel};
use std::io;
use std::mem::replace;
use std::task::spawn;

struct Future<'a, A> {
  state: FutureState<'a, A>
}

obolton

AWS ELB with Node.js and WebSockets

This assumes that:

• You are using Nginx.
• You want to accept incoming connections on port 80.
• Your Node.js app is listening on port 3000.
• You want to be able to connect to your Node.js instance directly as well as via the load balancer.

####1. Create load balancer

vmarquez

  object Test {   
    import scalaz.{Lens,State}   
    case class BlahConfig(server: Int, l: List[Int]) 
     
    def doStuff(i: Int) = State[BlahConfig,Int]( c => (c.copy(l = i :: c.l), c.server) ) 
   
    case class FooConfig(val password: String) 
   
    def doSomeStuff(i: Int) = State[FooConfig, String](c =>(c, c.password)) 
    

pathikrit

val n = 9
val s = Math.sqrt(n).toInt
type Board = IndexedSeq[IndexedSeq[Int]]
 
def solve(board: Board, cell: Int = 0): Option[Board] = (cell%n, cell/n) match {
  case (r, `n`) => Some(board)
  case (r, c) if board(r)(c) > 0 => solve(board, cell + 1)
  case (r, c) =>
    def guess(x: Int) = solve(board.updated(r, board(r).updated(c, x)), cell + 1)  
    val used = board.indices.flatMap(i => Seq(board(r)(i), board(i)(c), board(s*(r/s) + i/s)(s*(c/s) + i%s)))

mpilquist

target

SethTisue

Scalawags #33: Back to School

YouTube link: https://www.youtube.com/watch?v=z1uviQbKe0U

Your hosts: Josh Suereth, Dick Wall, Daniel Spiewak, Seth Tisue

Join us during and between episodes for web-based Scalawags chat on Gitter.

Intro (0:00)

pcting

import akka.http.scaladsl.model.HttpHeader
import akka.http.scaladsl.model.HttpMethods._
import akka.http.scaladsl.model.HttpResponse
import akka.http.scaladsl.model.headers.`Access-Control-Allow-Credentials`
import akka.http.scaladsl.model.headers.`Access-Control-Allow-Methods`
import akka.http.scaladsl.model.headers.`Access-Control-Allow-Origin`
import akka.http.scaladsl.model.headers.Origin
import akka.http.scaladsl.server.Directive0
import akka.http.scaladsl.server.Directives._
import akka.http.scaladsl.server.MethodRejection

davidread

1. Register for Microsoft account at https://signup.live.com/signup
2. Email verification - click link (logs you in)
3. Register on Azure Data Market at https://datamarket.azure.com/register
4. Go to: https://datamarket.azure.com/dataset/datagovuk/metofficeweatheropendata click 'Sign up' then 'agree', then 'sign up'.

Use Web i/f to download CSV:
At: https://datamarket.azure.com/dataset/explore/0f2cba12-e5cf-4c6d-83c9-83114d44387a click 'Explore', 'Three Hourly Forecast' and 'Download Excel (CSV)'

or by API:
Go to: https://datamarket.azure.com/account for account key