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From: Samuel Tardieu <sam@ada.eu.org>
Subject: Re: Erlang  (Was Re: Answering an Ada/COBOL Question)
Date: 1999/11/17
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>>>>> "Vladimir" == Vladimir Olensky <vladimir_olensky@yahoo.com> writes:

Vladimir> Taking into account the whole set of tools and libraries for
Vladimir> telecom apps as well as gigabit telecom equipment (scalable
Vladimir> ATM switches) where Erlang was used successfully as software
Vladimir> platform I may take an assumption that it could be a serious
Vladimir> competitor to Ada in this domain.  Erlang (the same as Ada)
Vladimir> was created as real language for real-time application and
Vladimir> real things.

Being an Erlang fan, I must admit that this is a nice language. But it
has not been designed for hard real time programs, only soft real time
ones.

Its main advantage over Ada is, IMO, the ability to replace running
code. Ericsson reports a near-100% uptime (the rest being hardware
upgrades) in several products. I played with this when developing an
IRC robot in Erlang: once the robot was able to connect to the IRC
server and dialog using the IRC protocol, it has never been
disconnected in one day while I was making heavy development on it. I
added all the functionalities one by one, fixed bugs one by one,
without ever stopping the program which was still talking with the
server.

  Sam
-- 
Samuel Tardieu -- sam@ada.eu.org