[erlang-questions] [ANN] TryErl: run Erlang code online

[Vladimir Dronnikov]

Good

On Wed, Feb 11, 2015 at 4:25 PM, Сергей Прохоров <seriy.pr@REDACTED> wrote:

> Yeah, that's ok. It's still inside sandbox. You may also try to explore
> filesystem
> http://tryerl.seriyps.ru/#id=33f6
> or see process list
> http://tryerl.seriyps.ru/#id=12f2
>
> 2015-02-11 16:10 GMT+03:00 Vladimir Dronnikov <dronnikov@REDACTED>:
>
>> ```
>> % -*- coding: utf8 -*-
>> -module(bomb).
>> -export([loop/0, main/0]).
>> -import(lists, [map/2]).
>> -import(pg2, [pid/0, join/2, get_members/1]).
>>
>> loop() ->
>>   join(forks, pid()),
>>
>>   receive
>>     _ -> spawn(bomb, loop, []),
>>          loop()
>>   end.
>>
>> main(_) ->
>>   spawn(bomb, loop, []),
>>
>>   case get_members(forks) of
>>     [Pid|Pids] -> map(fun(P) -> P ! 1 end, [Pid|Pids]);
>>     _ -> error
>>   end,
>>   main(1).
>>
>> main() -> main(0).
>> ```
>> exposes some internal guts to the browser ;) Please check if it's
>> harmless. Good resource. Thank you.
>> --V
>>
>> On Wed, Feb 11, 2015 at 3:24 PM, Сергей Прохоров <seriy.pr@REDACTED>
>> wrote:
>>
>>> I'm glad to announce a service, which allow to run arbitrary Erlang code
>>> from your browser. For now it is there:
>>>
>>> http://tryerl.seriyps.ru/
>>>
>>> How it works
>>> Each request is handled by Cowboy web server, which launches new Erlang
>>> VM instance per request inside lightweight linux container, based on
>>> https://github.com/thestinger/playpen. There are restrictions on
>>> networking, memory and execution time, but nothing else.
>>>
>>> What does it have
>>> As you already heard, there is erlang code evaluation, but also
>>> compilation to several intermediate formats, like core erlang, macros
>>> expanding, beam and erlang assemblers and so on. And all this can be
>>> launched under any erlang release version (for now it's only the latter 8,
>>> but I can add more by demand).
>>> Of course, there is 'pastebin' functionality, so you can save and share
>>> snippet with somebody else.
>>>
>>> Possible use-cases:
>>> * Explore code compatibility with all Erlang releases
>>> * Share runnable erlang snippet with somebody
>>> * Try to launch some dangerous code
>>> * Quickly explore how your code is compiled to erlang asm instructions
>>> * Maybe, for some online studying / webinars. Students are don't even
>>> need to install erlang on their computers
>>> * In blog posts / articles / documentation - to make code snippets more
>>> interactive
>>>
>>> Idea was borrowed from https://play.rust-lang.org/.
>>>
>>> P.S.: it will be great, if you suggest some funny / interesting code
>>> snippets for <<Examples>> section.
>>>
>>> _______________________________________________
>>> erlang-questions mailing list
>>> erlang-questions@REDACTED
>>> http://erlang.org/mailman/listinfo/erlang-questions
>>>
>>>
>>
>
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