json -is:module
Set the body of the response to the JSON encoding of the given value.
Also sets "Content-Type" header to "application/json; charset=utf-8"
if it has not already been set.
Set the body of the response to the JSON encoding of the given value.
Also sets "Content-Type" header to "application/json; charset=utf-8"
if it has not already been set.
Support for serialising Haskell to and from JSON
JSON (JavaScript Object Notation) is a lightweight data-interchange
format. It is easy for humans to read and write. It is easy for
machines to parse and generate. It is based on a subset of the
JavaScript Programming Language, Standard ECMA-262 3rd Edition -
December 1999.
This library provides a parser and pretty printer for converting
between Haskell values and JSON.
Decoder of the JSON values into a JSON AST.
Encoder of JSON values from JSON AST.
Parse any JSON value.
The conversion of a parsed value to a Haskell value is deferred until
the Haskell value is needed. This may improve performance if only a
subset of the results of conversions are needed, but at a cost in
thunk allocation.
This function is an alias for
value. In aeson 0.8 and earlier,
it parsed only object or array types, in conformance with the
now-obsolete RFC 4627.
Warning
If an object contains duplicate keys, only the first one will be kept.
For a more flexible alternative, see
jsonWith.
A
QuasiQuoter for constructing JSON values.
The constructed value is polymorph and unifies to instances of
FromValue.
When used as a
ResponseMatcher it matches a response with
- a status code of 200
- a Content-Type header with value
application/json
- the specified JSON as response body
When used as a
ByteString it creates a ByteString from the
specified JSON that can be used as a request body for e.g.
POST and
PUT requests.
Example:
>>> L.putStrLn [json|[23, {foo: 42}]|]
[23,{"foo":42}]
The class of types serialisable to and from JSON
Property to be extracted from some JSON when it has some surrounding
structure. e.g., specifying the property values.features is
equivalent to retrieving json.values.features from a JSON
object with a custom delimiter.
Wrapper for (de)serializing underlying type as json.