LIBBSON_LEGACY_EXTENDED_JSON(3) libbson LIBBSON_LEGACY_EXTENDED_JSON(3) libbson can produce a non-portable Legacy Extended JSON format. WARNING: Use of the Legacy Extended JSON format is discouraged. Prefer Canonical Extended JSON or Relaxed Extended JSON for portability. MongoDB Extended JSON (v2) describes the preferred Relaxed Extended JSON format and Canonical Extended Formats libbson's Legacy Extended JSON format matches Relaxed Extended JSON with the following exceptions. Notation is borrowed from MongoDB Extended JSON (v2): +------------------------+---------------------------------------------------------------------------+ | Type | Legacy Extended JSON | +------------------------+---------------------------------------------------------------------------+ | Binary | | | | { "$binary": "<payload>", "$type": "<t>" } | +------------------------+---------------------------------------------------------------------------+ | Date | | | | { "$date" : "<millis>" } | +------------------------+---------------------------------------------------------------------------+ | Regular Expression | | | | { "$regex" : "<regexPattern>", "$options" : "<options>" } | +------------------------+---------------------------------------------------------------------------+ | DBPointer (deprecated) | | | | { "$ref" : "<collection namespace>", "$id" : "<ObjectId bytes>" } | +------------------------+---------------------------------------------------------------------------+ | Symbol (deprecated) | | | | "<string>" | +------------------------+---------------------------------------------------------------------------+ | Double infinity | infinity or inf without quotes. Implementation defined. Produces invalid | | | JSON. | +------------------------+---------------------------------------------------------------------------+ | Double NaN | nan or nan(n-char-sequence). Implementation defined. Produces invalid | | | JSON. | +------------------------+---------------------------------------------------------------------------+ AUTHOR MongoDB, Inc COPYRIGHT 2009-present, MongoDB, Inc. 1.30.8 Aug 27, 2026 LIBBSON_LEGACY_EXTENDED_JSON(3)
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