1 Introduction
This section is the Erlang reference manual. It describes the Erlang programming language.
1.1 Purpose
The focus of the Erlang reference manual is on the language itself, not the implementation of it. The language constructs are described in text and with examples rather than formally specified. This is to make the manual more readable. The Erlang reference manual is not intended as a tutorial.
Information about implementation of Erlang can, for example, be found, in the following:
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Starting and stopping, boot scripts, code loading, error logging, creating target systems
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Memory consumption, system limits
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ERTS User's Guide
1.2 Prerequisites
It is assumed that the reader has done some programming and is familiar with concepts such as data types and programming language syntax.
1.3 Document Conventions
In this section, the following terminology is used:
- A sequence is one or more items. For example, a clause body consists of a sequence of expressions. This means that there must be at least one expression.
- A list is any number of items. For example, an argument list can consist of zero, one, or more arguments.
If a feature has been added recently, in Erlang 5.0/OTP R7 or later, this is mentioned in the text.
1.4 Complete List of BIFs
For a complete list of BIFs, their arguments and return values, see erlang(3) manual page in ERTS.
1.5 Reserved Words
The following are reserved words in Erlang:
after and andalso band begin bnot bor bsl bsr bxor case catch cond div end fun if let not of or orelse receive rem try when xor