Better organisation; examples; ESOP2014
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@ -7,3 +7,10 @@ defaults:
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title: "syn·di·cate"
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subtitle: "a language for interactive programs"
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markdown: kramdown
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highlighter: rouge
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kramdown:
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input: GFM
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hard_wrap: false
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@ -0,0 +1,11 @@
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```javascript
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actor {
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this.balance = 0;
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forever {
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assert account(this.balance);
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on message deposit($amount) {
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this.balance += amount;
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}
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}
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}
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```
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```javascript
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actor {
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forever {
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on asserted account($balance) {
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console.log("Balance:",
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balance);
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}
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}
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}
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```
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```racket
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(actor
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(forever #:collect [(balance 0)]
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(assert (account balance))
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(on (message (deposit $amount))
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(+ balance amount))))
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```
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```racket
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(actor
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(forever
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(on (asserted (account $balance))
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(printf "Balance: ~a\n"
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balance))))
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```
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index.md
91
index.md
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class: frontpage
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link:
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ghrepo: 'https://github.com/tonyg/syndicate'
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docs: 'http://docs.racket-lang.org/syndicate/index.html'
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---
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**noun**
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1. a self-organizing group of individuals, companies, corporations or
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entities formed to transact some specific business, to pursue or
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promote a shared interest. <small>—[Wikipedia](https://en.wikipedia.org/wiki/Syndicate)</small>
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promote a shared interest.
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<small>—[Wikipedia](https://en.wikipedia.org/wiki/Syndicate)</small>
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# Motivation
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<div></div>
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Every interactive program needs some way of
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<!-- # Motivation -->
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- representing the *conversations* it is having as *concurrent
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components*
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<!-- Every interactive program needs some way of -->
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- *mapping incoming events* to these components
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<!-- - representing the *conversations* it is having as *concurrent -->
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<!-- components* -->
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- managing the *shared understanding* that the components are
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building as they work towards the program's goal
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<!-- - *mapping incoming events* to these components -->
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- cleaning up shared state after *partial failure* of a component
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<!-- - managing the *shared understanding* that the components are -->
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<!-- building as they work towards the program's goal -->
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- *scoping* interactions and shared state inside the program
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<!-- - cleaning up shared state after *partial failure* of a component -->
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Existing programming languages lack linguistic support for these
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requirements, leaving the programmer to fend for themselves.
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<!-- - *scoping* interactions and shared state inside the program -->
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Syndicate is a language designed to help organise interactive
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programs.
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<!-- Existing programming languages lack linguistic support for these -->
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<!-- requirements, leaving the programmer to fend for themselves. -->
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# Features
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<!-- Syndicate is a language designed to help organise interactive -->
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<!-- programs. -->
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## Overview
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Syndicate is an Actor-based language offering
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- recursive layering of groups of actors, each group with a private
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dataspace of its own, for organising larger programs
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Together, these features help address the above challenges.
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<!-- Together, these features help address the above challenges. -->
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# Code
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Together, these features help programmers organise their interactive programs.
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## Example
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These two actors implement a toy “bank account” actor that listens for
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`deposit` messages and maintains an `account` balance record in the
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shared dataspace. The first is written using Syndicate implemented for
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Racket, and the second using Syndicate for JavaScript.
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{% capture racket_example1 %}{% include frontpage_racket_example1.md %}{% endcapture %}
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{% capture javascript_example1 %}{% include frontpage_javascript_example1.md %}{% endcapture %}
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{% capture racket_example2 %}{% include frontpage_racket_example2.md %}{% endcapture %}
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{% capture javascript_example2 %}{% include frontpage_javascript_example2.md %}{% endcapture %}
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<div class="frontpage_code_examples">
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{{ racket_example1 | markdownify }}
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{{ javascript_example1 | markdownify }}
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</div>
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The next two implement a client for the “bank account”. Each time the
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balance in the shared dataspace changes, they print a message to the
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console.
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<div class="frontpage_code_examples">
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{{ racket_example2 | markdownify }}
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{{ javascript_example2 | markdownify }}
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</div>
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## Code
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Syndicate is implemented both for [Racket](http://racket-lang.org/)
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and for [ES5](https://en.wikipedia.org/wiki/ECMAScript).
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and for [JavaScript](https://en.wikipedia.org/wiki/ECMAScript).
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<a href="{{ page.link.ghrepo }}"><img class="leftfloat" alt="Link to Syndicate github repo" src="{{ site.baseurl }}/img/GitHub-Mark-64px.png"></a>
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The [Syndicate github repository]({{ page.link.ghrepo }}) contains
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@ -66,15 +98,19 @@ implementations along with some larger example programs.
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<div class="clear"></div>
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# Papers
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## Documentation
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Forthcoming.
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<!-- An early draft is available [here]({{ page.link.docs }}). -->
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## Papers
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<a href="{{ site.baseurl }}/papers/from-events-to-reactions-a-progress-report-20160301-1747.pdf"><img class="leftfloat" src="{{ site.baseurl }}/img/pdf_icon_gen_48x49.png"></a>
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Tony Garnock-Jones, [“From Events To Reactions: A Progress Report”]({{
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site.baseurl
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}}/papers/from-events-to-reactions-a-progress-report-20160301-1747.pdf),
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In: Proc. 9th Int. Workshop on Programming Language Approaches to
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Concurrency and Communication-cEntric Software (PLACES 2016), April
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2016, Eindhoven, Netherlands.
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In: Proc. PLACES 2016 (workshop), April 2016, Eindhoven, Netherlands.
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<div class="clear"></div>
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@ -82,7 +118,14 @@ Concurrency and Communication-cEntric Software (PLACES 2016), April
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Tony Garnock-Jones and Matthias Felleisen,
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[“Coordinated Concurrent Programming in Syndicate”]({{ site.baseurl
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}}/papers/coordinated-concurrent-programming-in-syndicate-20160111-1409.pdf),
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In: Proc. 25th European Symposium on Programming (ESOP 2016), April
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2016, Eindhoven, Netherlands.
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In: Proc. ESOP 2016, April 2016, Eindhoven, Netherlands.
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<div class="clear"></div>
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<a href="{{ site.baseurl }}/papers/network-as-language-construct-20140117-1204.pdf"><img class="leftfloat" src="{{ site.baseurl }}/img/pdf_icon_gen_48x49.png"></a>
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Tony Garnock-Jones, Sam Tobin-Hochstadt, and Matthias Felleisen,
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[“The Network as a Language Construct”]({{ site.baseurl
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}}/papers/network-as-language-construct-20140117-1204.pdf),
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In: Proc. ESOP 2014, April 2016, Eindhoven, Netherlands.
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<div class="clear"></div>
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style.css
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padding: 0em 2em;
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}
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#page.frontpage .frontpage_code_examples {
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display: flex;
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flex-direction: row;
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flex-wrap: wrap;
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}
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#page.frontpage .frontpage_code_examples div {
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flex-grow: 1;
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text-align: center;
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background: #eee;
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margin: 0.2em;
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}
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#page.frontpage .frontpage_code_examples pre {
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font-size: 105%;
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display: inline-block;
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text-align: left;
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margin: 0;
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}
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/*---------------------------------------------------------------------------*/
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div.linkbuttons {
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