Tcl Library Source Code

EuroTcl/OpenACS 11 - 12 JULY 2024, VIENNA

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json::write - JSON generation

Table Of Contents


package require Tcl 8.5 9
package require json::write ?1.0.5?

::json::write indented
::json::write indented flag
::json::write aligned
::json::write aligned flag
::json::write string s
::json::write array arg...
::json::write array-strings arg...
::json::write object key value...
::json::write object-strings key value...


The json::write package provides a simple Tcl-only library for generation of text in the JSON data exchange format as specified in RFC 4627



To parse json, instead of writing it, see package json.

Bugs, Ideas, Feedback

This document, and the package it describes, will undoubtedly contain bugs and other problems. Please report such in the category json of the Tcllib Trackers. Please also report any ideas for enhancements you may have for either package and/or documentation.

When proposing code changes, please provide unified diffs, i.e the output of diff -u.

Note further that attachments are strongly preferred over inlined patches. Attachments can be made by going to the Edit form of the ticket immediately after its creation, and then using the left-most button in the secondary navigation bar.


data exchange, exchange format, javascript, json


CGI programming


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