Erlang (programming language)/Tutorials: Difference between revisions
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imported>Eric Evers |
imported>Eric Evers |
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==Overview== | ==Overview== | ||
==Syntax of functions== | ==Syntax== | ||
===Syntax of functions=== | |||
Functions are defined by the domain of the arguments and the number of arguemnts. A function ends with a period. A function defined over differnt domains are separated by semicolons. A fact function gives an answer that is sensitive to the domain of the input. With strings it gives a fact. With counting numbers it gives the factorial function. | Functions are defined by the domain of the arguments and the number of arguemnts. A function ends with a period. A function defined over differnt domains are separated by semicolons. A fact function gives an answer that is sensitive to the domain of the input. With strings it gives a fact. With counting numbers it gives the factorial function. | ||
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fact(N-1)*N; | fact(N-1)*N; | ||
fact(N) when N < 0 -> error. | fact(N) when N < 0 -> error. | ||
==Macros== | ==Macros== | ||
Revision as of 18:30, 19 April 2008
Erlang Language Programming Tutorials
Overview
Syntax
Syntax of functions
Functions are defined by the domain of the arguments and the number of arguemnts. A function ends with a period. A function defined over differnt domains are separated by semicolons. A fact function gives an answer that is sensitive to the domain of the input. With strings it gives a fact. With counting numbers it gives the factorial function.
fact("aloha") -> "Aloha is a greating";
fact(String) when is_a_list(String) ->
"no fact is known about " ++ String;
fact(0) -> 1;
fact(N) when is_integer(N) and (N > 0) ->
fact(N-1)*N;
fact(N) when N < 0 -> error.
Macros
-define(LIKERT_SCALE, lists:seq(1, 5)).
A = LIKERT_SCALE.
Simple Types
Advanced Types
Popular Modules
Example programs
Hello World (Serial)
Parallel Hello
Prime Sieve with Linda
Autonomous Agents in Erlang
See definition of Autonomous Agent.