Erlang/OTP. Erlang is a programming language and runtime system for building massively scalable soft real-time systems with requirements on high availability.. OTP is a set of Erlang libraries, which consists of the Erlang runtime system, a number of ready-to-use components mainly written in Erlang, and a set of design principles for Erlang programs.
If you have a list of lists L = ["I","like","Erlang"], then you can sum the lengths of all the strings in L as follows: > L = ["I","like","Erlang"]. ["I","like","Erlang"] 10> lists:foldl(fun(X, Sum) -> length(X) + Sum end, 0, L). 11
lists:foldr. Because Erlang maps respect Erlang sorting order, a map such as #{1.0 => true} is going to compare equal to #{1 => true}, but you won't be able to match them one against the other. Be careful, because although the content of this section is written as based on EEP-43, the actual implementation might be lagging behind! In LFE lists are like they are in a Lisp (except they also include strings). Additionally, LFE has tuples (Lisp vectors) and maps (Lisp has tables). LFE has property lists, dicts, and ordered dicts from Erlang, supported via additional libraries. Awesome Erlang .
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and making them traceable back to the system requirements, feature lists and Functional programming languages such as OCaml, Haskell, F# or Erlang +