Difference between revisions of "fcl-json"
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| − | An article covering use of XML and JSON in FreePascal: [http://www.freepascal.org/~michael/articles/webdata/webdata.pdf] | + | An article covering use of XML and JSON in FreePascal: [http://www.freepascal.org/~michael/articles/webdata/webdata.pdf PDF] |
[[Package List]] | [[Package List]] | ||
Revision as of 08:04, 15 February 2015
fcl-json - a JSON (Javascript Object Notation) implementation
Notes
Contains the fpjson JSON manipulation unit.
Note: In FPJSON, accessing e.g. SomeJSONObject.Integers['price'] may give a SIGSEGV/Access Violation if that integer variable does not exist. This is apparently intentional, see [1]
You'd have to use the .Find method (available since FPC 2.6.2) to first check if the element/variable (price in this example) exists.
Streaming
fcl-json contains the unit "fpjsonrtti" which is used to load objects (TObject instances) from or save them to JSON format.
See Streaming JSON for a short example.
Examples
Example usage can be found in the Lazarus jsonviewer tool.
Also, the fpctwit library makes use of JSON to send/receive data.
See also
An article covering use of XML and JSON in FreePascal: PDF
