CMCDragonkai

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What is the appeal of dynamically-typed languages?

Kris Nuttycombe asks:

I genuinely wish I understood the appeal of unityped languages better. Can someone who really knows both well-typed and unityped explain?

I think the terms well-typed and unityped are a bit of question-begging here (you might as well say good-typed versus bad-typed), so instead I will say statically-typed and dynamically-typed.

I'm going to approach this article using Scala to stand-in for static typing and Python for dynamic typing. I feel like I am credibly proficient both languages: I don't currently write a lot of Python, but I still have affection for the language, and have probably written hundreds of thousands of lines of Python code over the years.

paf31

Introduction

At DICOM Grid, we recently made the decision to use Haskell for some of our newer projects, mostly small, independent web services. This isn't the first time I've had the opportunity to use Haskell at work - I had previously used Haskell to write tools to automate some processes like generation of documentation for TypeScript code - but this is the first time we will be deploying Haskell code into production.

Over the past few months, I have been working on two Haskell services:

• A reimplementation of an existing socket.io service, previously written for NodeJS using TypeScript.
• A new service, which would interact with third-party components using standard data formats from the medical industry.

I will write here mostly about the first project, since it is a self-contained project which provides a good example of the power of Haskell. Moreover, the proces

hansent

//gulp &  plugins
var gulp = require('gulp');
var gutil = require('gulp-util');
var jshint = require('gulp-jshint');
var browserify = require('gulp-browserify');
var jade = require('gulp-jade');
var stylus = require('gulp-stylus');
var mocha = require('gulp-mocha');
var nodemon = require('gulp-nodemon');
var livereload = require('gulp-livereload');

mani95lisa

wget http://cloud.github.com/downloads/rvoicilas/inotify-tools/inotify-tools-3.14.tar.gz
tar -zxvf inotify-tools-3.14.tar.gz
cd inotify-tools-3.14
./configure
make
make install
updatedb

xenji

/** @jsx React.DOM */
define(['react'], function(React) {

    var MenuItem = React.createClass({
        handleMenuClick: React.autoBind(function() {
            this.props.eventBus.emit('navigate.page.start', {page: this.props.data.page});
        }),
        render: function(){
            var active = this.props.isActive === true ? 'active' : '';
            return <li class={active}><a href="javascript:void(0)" onClick={this.handleMenuClick}><span class="hidden-tablet">{this.props.data.text}</span></a></li>;

quchen

13:15 <xQuasar>      | HASKELL IS FOR FUCKIN FAGGOTS. YOU'RE ALL A BUNCH OF 
                     | FUCKIN PUSSIES
13:15 <xQuasar>      | JAVASCRIPT FOR LIFE FAGS
13:16 <luite>        | hello
13:16 <ChongLi>      | somebody has a mental illness!
13:16 <merijn>       | Wow...I suddenly see the error of my ways and feel 
                     | compelled to write Node.js!
13:16 <genisage>     | hi
13:16 <luite>        | you might be pleased to learn that you can compile 
                     | haskell to javascript now