Document json_document and json_view

- API pages for basic_json_document and basic_json_view, one per member,
  and for the four aliases, each with an example
- features/json_view.md: the problem the view solves, ownership and
  lifetime, what matches basic_json::parse() and what differs, and when
  to choose json, ordered_json, SAX, or the view
- the examples show why one would use the view, not only how: borrowed
  vs. owned input, reading a few fields and materializing one subtree,
  reusing a document across many messages
- registered in the mkdocs navigation, llms.txt, the docset, the
  exceptions page (out_of_range.416), architecture.md, the integration
  page, and the README; the yyjson credit is added to the README and
  license.md

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

docs/mkdocs/docs/api/basic_json/empty.md

@@ -60,6 +60,10 @@ itself is empty which is `#!cpp false` in the case of a string.
     --8<-- "examples/empty.output"
     ```
 
+## See also
+
+- [basic_json_view::empty](../basic_json_view/empty.md) - the same check on a zero-copy view
+
 ## Version history
 
 - Added in version 1.0.0.

docs/mkdocs/docs/api/basic_json/is_array.md

@@ -34,6 +34,10 @@ Constant.
     --8<-- "examples/is_array.output"
     ```
 
+## See also
+
+- [basic_json_view::is_array](../basic_json_view/is_array.md) - the same check on a zero-copy view
+
 ## Version history
 
 - Added in version 1.0.0.

docs/mkdocs/docs/api/basic_json/is_binary.md

@@ -34,6 +34,10 @@ Constant.
     --8<-- "examples/is_binary.output"
     ```
 
+## See also
+
+- [basic_json_view::is_binary](../basic_json_view/is_binary.md) - the same check on a zero-copy view
+
 ## Version history
 
 - Added in version 3.8.0.

docs/mkdocs/docs/api/basic_json/is_boolean.md

@@ -34,6 +34,10 @@ Constant.
     --8<-- "examples/is_boolean.output"
     ```
 
+## See also
+
+- [basic_json_view::is_boolean](../basic_json_view/is_boolean.md) - the same check on a zero-copy view
+
 ## Version history
 
 - Added in version 1.0.0.

docs/mkdocs/docs/api/basic_json/is_discarded.md

@@ -69,6 +69,11 @@ with `allow_exceptions` set to `#!cpp false`: a parse error then yields a discar
     --8<-- "examples/is_discarded.output"
     ```
 
+## See also
+
+- [basic_json_view::is_discarded](../basic_json_view/is_discarded.md) - the corresponding check on a zero-copy view,
+  which is `#!cpp true` if the view refers to no value
+
 ## Version history
 
 - Added in version 1.0.0.

docs/mkdocs/docs/api/basic_json/is_null.md

@@ -34,6 +34,10 @@ Constant.
     --8<-- "examples/is_null.output"
     ```
 
+## See also
+
+- [basic_json_view::is_null](../basic_json_view/is_null.md) - the same check on a zero-copy view
+
 ## Version history
 
 - Added in version 1.0.0.

docs/mkdocs/docs/api/basic_json/is_number.md

@@ -49,6 +49,7 @@ constexpr bool is_number() const noexcept
 - [is_number_integer()](is_number_integer.md) check if the value is an integer or unsigned integer number
 - [is_number_unsigned()](is_number_unsigned.md) check if the value is an unsigned integer number
 - [is_number_float()](is_number_float.md) check if the value is a floating-point number
+- [basic_json_view::is_number](../basic_json_view/is_number.md) - the same check on a zero-copy view
 
 ## Version history
 

docs/mkdocs/docs/api/basic_json/is_number_float.md

@@ -40,6 +40,7 @@ Constant.
 - [is_number()](is_number.md) check if the value is a number
 - [is_number_integer()](is_number_integer.md) check if the value is an integer or unsigned integer number
 - [is_number_unsigned()](is_number_unsigned.md) check if the value is an unsigned integer number
+- [basic_json_view::is_number_float](../basic_json_view/is_number_float.md) - the same check on a zero-copy view
 
 ## Version history
 

docs/mkdocs/docs/api/basic_json/is_number_integer.md

@@ -40,6 +40,7 @@ Constant.
 - [is_number()](is_number.md) check if the value is a number
 - [is_number_unsigned()](is_number_unsigned.md) check if the value is an unsigned integer number
 - [is_number_float()](is_number_float.md) check if the value is a floating-point number
+- [basic_json_view::is_number_integer](../basic_json_view/is_number_integer.md) - the same check on a zero-copy view
 
 ## Version history
 

docs/mkdocs/docs/api/basic_json/is_number_unsigned.md

@@ -40,6 +40,7 @@ Constant.
 - [is_number()](is_number.md) check if the value is a number
 - [is_number_integer()](is_number_integer.md) check if the value is an integer or unsigned integer number
 - [is_number_float()](is_number_float.md) check if the value is a floating-point number
+- [basic_json_view::is_number_unsigned](../basic_json_view/is_number_unsigned.md) - the same check on a zero-copy view
 
 ## Version history
 

docs/mkdocs/docs/api/basic_json/is_object.md

@@ -34,6 +34,10 @@ Constant.
     --8<-- "examples/is_object.output"
     ```
 
+## See also
+
+- [basic_json_view::is_object](../basic_json_view/is_object.md) - the same check on a zero-copy view
+
 ## Version history
 
 - Added in version 1.0.0.

docs/mkdocs/docs/api/basic_json/is_primitive.md

@@ -62,6 +62,7 @@ This library extends primitive types to binary types, because binary types are r
 - [is_boolean()](is_boolean.md) returns whether the JSON value is a boolean
 - [is_number()](is_number.md) returns whether the JSON value is a number
 - [is_binary()](is_binary.md) returns whether the JSON value is a binary array
+- [basic_json_view::is_primitive](../basic_json_view/is_primitive.md) - the same check on a zero-copy view
 
 ## Version history
 

docs/mkdocs/docs/api/basic_json/is_string.md

@@ -34,6 +34,10 @@ Constant.
     --8<-- "examples/is_string.output"
     ```
 
+## See also
+
+- [basic_json_view::is_string](../basic_json_view/is_string.md) - the same check on a zero-copy view
+
 ## Version history
 
 - Added in version 1.0.0.

docs/mkdocs/docs/api/basic_json/is_structured.md

@@ -57,6 +57,7 @@ Note that though strings are containers in C++, they are treated as primitive va
 - [is_primitive()](is_primitive.md) returns whether JSON value is primitive
 - [is_array()](is_array.md) returns whether the value is an array
 - [is_object()](is_object.md) returns whether the value is an object
+- [basic_json_view::is_structured](../basic_json_view/is_structured.md) - the same check on a zero-copy view
 
 ## Version history
 

docs/mkdocs/docs/api/basic_json/size.md

@@ -51,6 +51,10 @@ JSON value which is `1` in the case of a string.
     --8<-- "examples/size.output"
     ```
 
+## See also
+
+- [basic_json_view::size](../basic_json_view/size.md) - the same function on a zero-copy view
+
 ## Version history
 
 - Added in version 1.0.0.

docs/mkdocs/docs/api/basic_json/type.md

@@ -47,6 +47,10 @@ Constant.
     --8<-- "examples/type.output"
     ```
 
+## See also
+
+- [basic_json_view::type](../basic_json_view/type.md) - the same function on a zero-copy view
+
 ## Version history
 
 - Added in version 1.0.0.