divarvel

scala> Some("yolo").fold(Nil)(List(_))
<console>:8: error: type mismatch;
 found   : List[String]
 required: scala.collection.immutable.Nil.type
              Some("yolo").fold(Nil)(List(_))
                                         ^

scala> Some("yolo").map(List(_)).getOrElse(Nil)
res1: List[String] = List(yolo)

divarvel

Tikhon Jelvis, consistency is all I ask
Votes by Jed Wesley-Smith, Scott Danzig, Gregory Popovitch, Toby Thain, and 111 more.
Most modern and well-featured? Hah! It's hard to tell it wasn't design 30 years ago. Go completely ignores most recent advances in programming languages in order to seem more similar to C. Charming.

Yes, there are drawbacks you're not seeing. But, more importantly, there are better alternatives you're ignoring. While some of the problems with Go are certainly actively detrimental, the bigger story is opportunity cost: you're missing out on some more capable, more expressive and safer languages.

So lets take your question in two parts: Go's drawbacks and then better alternatives.

Drawbacks

divarvel

Play - Grunt integration

Gist does not let me put directories names in file names, so make sure to put:

• assets-Gruntfile.js in assets/Gruntfile.js
• assets-package.json in assets/package.json
• project-Grunt.scala in project/Grunt.scala
• project-JavaScriptBuild.scala in project/JavaSCriptBuild.scala

The goal is to let grunt handle everything in the assets directory.

divarvel

Keybase proof

I hereby claim:

• I am divarvel on github.
• I am clementd (https://keybase.io/clementd) on keybase.
• I have a public key whose fingerprint is 78D3 430C 4600 7020 9F7A B0A2 6BFE 863C 2684 AD09

To claim this, I am signing this object:

divarvel

just value = Cont ($ value)
nothing def = Cont (const def)

result = do
    x <- just 5
    just (x + 5)

result' = do
    x <- nothing(0)
    just (x + 5)

divarvel

import play.api.Play.current
import scala.concurrent.duration._
import play.api.libs.concurrent.Akka
import play.api.libs.concurrent.Execution.Implicits._
import play.api.Logger
import play.api.libs.mailer._


object email {  
  val senderAddress = ("name", "email@example.com")

divarvel

package models

import scalaz._
import Scalaz._

import anorm._
import org.postgresql.util.PGobject
import org.postgresql.jdbc4.Jdbc4Array

divarvel

class A() {
  def b(c: C): Unit = ()
}

class C() {
  def >>:(a: A): Unit = ()
}

object test {
  val a = new A()

divarvel

var casper = require("casper").create();
casper.start();

var screenSize = [1024, 768];
var frameCount = 68;
function slideUrl(i) {
  return 'http://localhost:9000/slides.html#'+i+'.0'
}
function frameName(i) {
  var n = i < 10 ? '0' + i : i;

divarvel

var mailjet = require('mailjet');
var Promise = require('bluebird');
var _ = require('lodash');
var request = require('request');


var Mailjet = function(key, secret) {
  return {
    makeRequest: function(endPoint, args, method, creds) {
      return new Promise(function(resolve, reject) {