| Safe Haskell | None |
|---|---|
| Language | Haskell98 |
Rest.Dictionary
Description
A dictionary (Dict) describes how to convert Haskell values to and from a web
representation. Rest resources internally use plain Haskell datatypes, while
communication to the outside world mostly happens using XML, JSON, plain text,
query parameters, etc. The Dict datatype describes how to convert resource
indentifiers, input, request parameters, request headers, output, and errors
to and from a Haskell representation.
The Dict datatype and most functions working on it take a type parameters for
every aspect of its communication, which can grow quickly. This module and
most code that depend on it uses the implicit convention of using the type
variable id for the resource identifier, the h for the request headers, the
p for the request parameters, the i for the request body, the o for the
response body, and the e for a possible error.