Encode a Value, you can use this function with toValue to get encodeJSON with a small overhead.

Escape text into JSON string and add double quotes, escaping rules:

   '\b':  "\b"
   '\f':  "\f"
   '\n':  "\n"
   '\r':  "\r"
   '\t':  "\t"
   '"':  "\""
   '\':  "\\"
   'DEL':  "\u007f"
   other chars <= 0x1F: "\u00XX"

This builder try to render integer when (0 <= e < 16), and scientific notation otherwise.

'ValuePretty'' with 4 spaces indentation per level, e.g.

{
    "results":
    [
        {
            "from_user_id_str":"80430860",
            "profile_image_url":"http://a2.twimg.com/profile_images/536455139/icon32_normal.png",
            "created_at":"Wed, 26 Jan 2011 07:07:02 +0000",
            "from_user":"kazu_yamamoto",
            "id_str":"30159761706061824",
            "metadata":
            {
                "result_type":"recent"
            },
            "to_user_id":null,
            "text":"Haskell Server Pages って、まだ続いていたのか！",
            "id":30159761706061824,
            "from_user_id":80430860,
            "geo":null,
            "iso_language_code":"no",
            "to_user_id_str":null,
            "source":"<a href="http:/twitter.com">web</a>"
        }
    ],
    "max_id":30159761706061824,
    "since_id":0,
    "refresh_url":"?since_id=30159761706061824&q=haskell",
    "next_page":"?page=2&max_id=30159761706061824&rpp=1&q=haskell",
    "results_per_page":1,
    "page":1,
    "completed_in":1.2606e-2,
    "since_id_str":"0",
    "max_id_str":"30159761706061824",
    "query":"haskell"
}

Encode a Value with indentation and linefeed.

Use : as separator to connect a label(no escape, only add quotes) with field builders.

Don't use chars which need escaped in label.

Use : as separator to connect a label(escape the label and add quotes) with field builders.

A JSON value represented as a Haskell value.

The Object's payload is a key-value vector instead of a map, which parsed directly from JSON document. This design choice has following advantages:

• Allow different strategies handling duplicated keys.
• Allow different Map type to do further parsing, e.g. FlatMap
• Roundtrip without touching the original key-value order.
• Save time if constructing map is not neccessary, e.g. using a linear scan to find a key if only that key is needed.