[#BloombergLP-bdljsn-Json-operator_subs-0f]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdljsn.adoc[bdljsn]::xref:BloombergLP/bdljsn/Json.adoc[Json]::operator[]
:relfileprefix: ../../../
:mrdocs:

Subscript operators

== Synopses

Declared in `<bdljsn_json.h>`

Return a reference providing modifiable access to the element at the specified `index` in the `JsonArray` held by this object. The behavior is undefined unless `isArray()` returns true and `index < theArray().size()`.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:BloombergLP/bdljsn/Json.adoc[Json]&
xref:BloombergLP/bdljsn/Json/operator_subs-03.adoc[operator[]](std::size_t index);
----

[.small]#xref:BloombergLP/bdljsn/Json/operator_subs-03.adoc[_» more..._]#

Return a reference providing non‐modifiable access to the element at the specified `index` in the `JsonArray` held by this object. The behavior is undefined unless `isArray()` returns true and `index < theArray().size()`.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:BloombergLP/bdljsn/Json.adoc[Json] const&
xref:BloombergLP/bdljsn/Json/operator_subs-04.adoc[operator[]](std::size_t index) const;
----

[.small]#xref:BloombergLP/bdljsn/Json/operator_subs-04.adoc[_» more..._]#

Return a reference providing modifiable access to the `Json` object associated with the specified `key` in the `JsonObject` held by this object. If `isNull()`, then type is changed to object. If the `JsonObject` does not already contain a `Json` object associated with `key`, first insert a new default‐constructed `Json` object associated with `key`. The behavior is undefined unless `isObject()` or `isNull()`.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:BloombergLP/bdljsn/Json.adoc[Json]&
xref:BloombergLP/bdljsn/Json/operator_subs-07.adoc[operator[]](std::string_view const& key);
----

[.small]#xref:BloombergLP/bdljsn/Json/operator_subs-07.adoc[_» more..._]#

Return a reference providing non‐modifiable access to the `Json` object associated with the specified `key` in this `JsonObject`. The behavior is undefined unless `key` is valid UTF‐8 (see `bdlde::Utf8Util::isValid`) and this `JsonObject` already contains a `Json` object associated with `key`.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:BloombergLP/bdljsn/Json.adoc[Json] const&
xref:BloombergLP/bdljsn/Json/operator_subs-0b.adoc[operator[]](std::string_view const& key) const;
----

[.small]#xref:BloombergLP/bdljsn/Json/operator_subs-0b.adoc[_» more..._]#


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