functional programming
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functional programming



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DEFINITION - 1) Functional programming is a style of programming that emphasizes the evaluation of expressions rather than the execution of commands. Erlang programming language is described as a functional programming language. Erlang avoids the use of global variables that can be used in common by multiple functions since changing such a variable in part of a program may have unexpected effects in another part.

2) In an earlier definition from the ITU-TS, functional programming is "a method for structuring programs mainly as sequences of possibly nested function procedure calls." A function procedure is a relatively simple program that is called by other programs and derives and returns a value to the program that called it.

LAST UPDATED: 15 Feb 2007

Read more about functional programming:
- The Functional Programming FAQ offers a definition.
- Why Functional Programming Matters discusses the advantages of functional programming.
- Eric Parizo's SearchWebServices article is called "With X#, Microsoft may popularize functional programming."


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