Erlang

erlang

[′er‚läŋ] (communications) A unit of communication traffic load, equal to the traffic load whose calls, if placed end to end, will keep one path continuously occupied.

Erlang

(person)Agner Krarup Erlang. (The other senses werenamed after him).

Erlang

(language)A concurrent functional language for largeindustrial real-time systems by Armstrong, Williams andVirding of Ellemtel, Sweden.

Erlang is untyped. It has pattern matching syntax,recursion equations, explicit concurrency, asynchronous message passing and is relatively free from side-effects.It supports transparent cross-platform distribution. It hasprimitives for detecting run-time errors, real-time garbage collection, modules, dynamic code replacement (changecode in a continuously running real-time system) and aforeign language interface.

An unsupported free version is available (subject to anon-commercial licence). Commercial versions with support areavailable from Erlang Systems AB. An interpreter inSICStus Prolog and compilers in C and Erlang are availablefor several Unix platforms.

Open Telecom Platform (OTP) is a set of libraries andtools.

Commercial version - sales, support,training, consultants. Open-source version - downloads, user-contributedsoftware, mailing lists.

Training and consulting.

E-mail: .

[Erlang - "Concurrent Programming in Erlang", J. Armstrong, M.& Williams R. Virding, Prentice Hall, 1993. ISBN 13-285792-8.]

Erlang

(unit)36 CCS per hour, or 1 call-second per second.

Erlang is a unit without dimension, accepted internationallyfor measuring the traffic intensity. This unit is defined asthe aggregate of continuous occupation of a channel for onehour (3600 seconds). An intensity of one Erlang means thechannel is continuously occupied.

Erlang

(1) A unit of measurement of telephone traffic. It is equal to one hour of conversation (3,600 seconds or 36 CCS). Named after the Danish mathematician Agner Krarup Erlang, it also specifies the approximate number of trunks in use; for example, if the traffic in a call center is 8.5 Erlangs in one hour, more than 8 trunks were used in that hour. See CCS.

(2) An open source functional programming language specialized for concurrent processing (multiprocessing) on Unix-based and Windows computers. Originally developed by Ericsson and named after A. K. Erlang (see definition #1 above) as well as "Ericsson Language," Erlang makes programming threads easier to write than in traditional languages. Developed in the late 1980s, Erlang was modeled after concurrent languages such as Ada and Modula and functional languages such as ML and Miranda. For more information, visit www.erlang.org and www.erlang.se. See functional programming, thread and multithreading.

Erlang

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Erlang

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Words related to Erlang

noun a unit of traffic intensity in a telephone system

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