[#nlohmann-basic_json-0c-from_bson-0b]
= xref:nlohmann.adoc[nlohmann]::xref:nlohmann/basic_json-0c.adoc[basic_json]::from_bson
:relfileprefix: ../../
:mrdocs:

create a JSON value from an input in BSON format

== Synopsis

Declared in `<nlohmann/json.hpp>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[nodiscard, deprecated]]
static
xref:nlohmann/basic_json-0c.adoc[basic_json]
from_bson(
    /* implementation-defined */::span_input_adapter&& i,
    bool const strict = true,
    bool const allow_exceptions = true);
----

[WARNING]
====
https://en.cppreference.com/cpp/language/attributes/deprecated[Deprecated^]: Since 3.8.0; use from_bson(ptr, ptr + len). Use of this entity is allowed but discouraged.
====
== Return Value

a JSON value representing the input, or a discarded value if `allow_exceptions` is `false` and a parse error occurred

[NOTE]
====
The return value https://en.cppreference.com/cpp/language/attributes/nodiscard[should not be discarded^].
====
== Parameters

[cols="1,4"]
|===
| Name| Description
| *i*
| an input in BSON format convertible to an input adapter
| *strict*
| whether to expect the input to be consumed until EOF
| *allow_exceptions*
| whether to throw exceptions in case of a parse error
|===


[.small]#Created with https://www.mrdocs.com[MrDocs]#