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+slidenumbers: true
+Erlang.
+======
+
+### Fault-tolerant, concurrent programming.
+
+---
+
+## A brief history of Erlang
+
+---
+
+![](https://www.ericsson.com/thinkingahead/the-networked-society-blog/wp-content/uploads/2014/09/bfW5FSr.jpg)
+
+
+^ Telefontornet in Stockholm, around 1890. Used until 1913. 
+
+---
+
+![](https://3.bp.blogspot.com/-UF7W9yTUO2g/VBqw-1HNTzI/AAAAAAAAPeg/KvsMbNSAcII/s1600/6835942484_1531372d8f_b.jpg)
+
+^ Telephones were operated manually at Switchboards. Anyone old enough to remember? I'm certainly not. 
+
+---
+
+![fit](https://russcam.github.io/fsharp-akka-talk/images/ericsson-301-AXD.png)
+
+^ Eventually we did that in software, and we got better at it over time. Ericsson AXD 301, first commercial Erlang switch. But lets take a step back.
+
+---
+
+## Phone switches must be ...
+
+Highly concurrent
+
+Fault-tolerant
+
+Distributed
+
+(Fast!)
+
+![right 150%](http://learnyousomeerlang.com/static/img/erlang-the-movie.png)
+
+---
+
+## ... and so is Erlang!
+
+---
+
+## Erlang as a whole:
+
+- Unique process model (actors!)
+- Built-in fault-tolerance & error handling
+- Distributed processes
+- Three parts!
+
+---
+
+## Part 1: Erlang, the language
+
+- Functional
+- Prolog-inspired syntax
+- Everything is immutable
+- *Extreme* pattern-matching
+
+---
+### Hello Joe
+
+```erlang
+hello_joe.
+```
+
+---
+### Hello Joe
+
+```erlang
+-module(hello1).
+-export([hello_joe/0]).
+
+hello_joe() ->
+    hello_joe.
+```
+
+---
+### Hello Joe
+
+```erlang
+-module(hello1).
+-export([hello_joe/0]).
+
+hello_joe() ->
+    hello_joe.
+    
+% 1> c(hello1).
+% {ok,hello1}
+% 2> hello1:hello_joe().
+% hello_joe
+```
+
+---
+### Hello Joe
+
+```erlang
+-module(hello2).
+-export([hello/1]).
+
+hello(Name) ->
+    io:format("Hello ~s!~n", [Name]).
+
+% 3> c(hello2).
+% {ok,hello2}
+% 4> hello2:hello("Joe").
+% Hello Joe!
+% ok
+```
+
+
+---
+
+## Drag & Drop images
+
+### Simply *drop an image onto the Deckset window* and the Markdown you need to display the image is automatically created and *copied to the clipboard.*
+
+---
+
+* This works with both local files and web images
+* You don’t _need_ to drag the file, you can also type the Markdown yourself if you know how
+
+![left,filtered](http://deckset-assets.s3-website-us-east-1.amazonaws.com/colnago1.jpg)