Boost Json Translation (zh_Hans)/Doc / Pages / Dom / Value (adoc) — Chinese (Simplified Han script) @ Boost-Weblate: = `value` JSON documents are represented in memory as instances …

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= `value` JSON documents are represented in memory as instances of <<ref_value>>: a {req_Regular} type which satisfies {req_DefaultConstructible}, {req_CopyConstructible}, {req_CopyAssignable}, {req_MoveConstructible}, {req_MoveAssignable}, and many of the requirements of allocator-aware containers. It is implemented as a https://en.wikipedia.org/wiki/Tagged_union[__variant__] internally, and can dynamically store any of the six defined JSON value types:

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	= `value` JSON documents are represented in memory as instances of <<ref_value>>: a {req_Regular} type which satisfies {req_DefaultConstructible}, {req_CopyConstructible}, {req_CopyAssignable}, {req_MoveConstructible}, {req_MoveAssignable}, and many of the requirements of allocator-aware containers. It is implemented as a https://en.wikipedia.org/wiki/Tagged_union[__variant__] internally, and can dynamically store any of the six defined JSON value types:	= `value` JSON文档在内存中表示为<<ref_value>>的实例：一种{req_Regular}类型，满足{req_DefaultConstructible}、{req_CopyConstructible}、{req_CopyAssignable}、{req_MoveConstructible}、{req_MoveAssignable}以及许多分配器感知容器的要求。它在内部实现为一个https://en.wikipedia.org/wiki/Tagged_union[__variant__]（变体），并且可以动态存储六种已定义的JSON值类型中的任意一种：</ref_value>
	null: A	空值：一种
	https://en.cppreference.com/w/cpp/utility/variant/monostate[__monostate__] value, equivalent to `nullptr`.	https://en.cppreference.com/w/cpp/utility/variant/monostate[__monostate__]（单态）值，等同于`nullptr`。
	boolean: A boolean: either `true` or `false`.	布尔值：布尔类型，取值为`true`或`false`。
	number: An integral or floating point value.	数值：整型或浮点型值。
	string: A sequence of zero or more Unicode characters,	字符串：由零个或多个Unicode字符组成的序列，
	similar to {std_string}.	类似于{std_string}。
	array: An ordered list of values, like {std_vector}.	数组：值的有序列表，类似于{std_vector}。
	object: A collection of name/value pairs, also known as an	对象：名称/值对的集合，也称为
	https://en.wikipedia.org/wiki/Associative_array[__associative array__].	https://en.wikipedia.org/wiki/Associative_array[__关联数组__]。
	Working With Values	处理值
	A <<ref_value>> constructed from `nullptr` or default constructed represents a null JSON element:	从`nullptr`构造或默认构造的 <<ref_value>> 表示一个空的JSON元素：</ref_value>
	The member function <<ref_value_kind,`value::kind`>> may be used to query the kind stored in the value. Alternatively, member functions like <<ref_value_is_object,`value::is_object`>> <<ref_value_is_number,`value::is_number`>> may be used to check whether or not the value is a particular kind:	成员函数<<ref_value_kind,`value::kind`>>可用于查询值中存储的种类。或者，也可以使用诸如<<ref_value_is_object,`value::is_object`>>、<<ref_value_is_number,`value::is_number`>> 等成员函数来检查值是否为特定种类：</ref_value_is_number,`value::is_number`></ref_value_is_object,`value::is_object`></ref_value_kind,`value::kind`>
	Functions like <<ref_value_if_object,`value::if_object`>> actually return a pointer to the object if the value is an object, otherwise they return null. This allows them to be used both in boolean contexts as above, and in assignments or conditional expressions to capture the value of the pointer:	诸如 <<ref_value_if_object,`value::if_object`>> 的函数在值为对象时返回指向该对象的指针，否则返回空指针。这使得它们既可用于上述的布尔上下文，也可用于赋值或条件表达式中，以捕获指针的值：</ref_value_if_object,`value::if_object`>
	After a <<ref_value>> is constructed, its kind can change depending on what is assigned to it, or by calling functions such as <<ref_value_emplace_array,`value::emplace_array`>> or <<ref_value_emplace_bool,`value::emplace_bool`>>. If the assignment is successful, in other words it completes without any exceptions then the value is replaced. Otherwise, the value is unchanged. All operations which can fail to modify a value offer the strong exception safety guarantee.	<<ref_value>> 构造之后，其类型可根据赋值内容或通过调用<<ref_value_emplace_array,`value::emplace_array`>> 或 <<ref_value_emplace_bool,`value::emplace_bool`>> 等函数来改变。如果赋值成功，即未引发任何异常，则该值将被替换。否则，原值保持不变。所有可能修改值失败的操作均提供强异常安全保证。</ref_value_emplace_bool,`value::emplace_bool`></ref_value_emplace_array,`value::emplace_array`></ref_value>
	The following table shows all of the ways to determine and access the contents of a <<ref_value>>:	下表列出了所有用于判断和访问 <<ref_value>> 内容的方法：</ref_value>

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	Type	类型
	Description	描述
	An associative array of string keys mapping to <<ref_value>> elements with an	一个关联数组，其键为字符串，值为 <<ref_value>> 元素，接口</ref_value>
	interface similar to {std_unordered_map}, that remembers insertion order.	类似于 {std_unordered_map}，并保留插入顺序
	An ordered list of <<ref_value>> elements with an interface similar to	一个<<ref_value>>元素的有序列表，其接口类似于</ref_value>
	{std_vector}.	{std_vector}。
	https://en.wikipedia.org/wiki/Unicode[Unicode] https://en.wikipedia.org/wiki/String_(computer_science)[string] of characters with an interface similar to {std_string}.	https://en.wikipedia.org/wiki/Unicode[Unicode]字符https://en.wikipedia.org/wiki/String_(computer_science)[字符串]，其接口类似于{std_string}。
	`double`	`double`
	A `double` holding a floating-point value.	一个`double`，用于保存浮点型值。
	https://en.cppreference.com/w/cpp/keyword/bool[`bool`]	https://en.cppreference.com/w/cpp/keyword/bool[`bool`]
	A `bool` holding `true` or `false`.	一个`bool`，用于保存`true`或`false`。
	<<ref_value_try_as_uint64>>	<<ref_value_try_as_uint64>></ref_value_try_as_uint64>
	<<ref_value_as_uint64>>	<<ref_value_as_uint64>></ref_value_as_uint64>
	similar to {std_string}.	类似于{std_string}。
	Kind	种类
	= `value` JSON documents are represented in memory as instances of <<ref_value>>: a {req_Regular} type which satisfies {req_DefaultConstructible}, {req_CopyConstructible}, {req_CopyAssignable}, {req_MoveConstructible}, {req_MoveAssignable}, and many of the requirements of allocator-aware containers. It is implemented as a https://en.wikipedia.org/wiki/Tagged_union[__variant__] internally, and can dynamically store any of the six defined JSON value types:	= `value` JSON文档在内存中表示为<<ref_value>>的实例：一种{req_Regular}类型，满足{req_DefaultConstructible}、{req_CopyConstructible}、{req_CopyAssignable}、{req_MoveConstructible}、{req_MoveAssignable}以及许多分配器感知容器的要求。它在内部实现为一个https://en.wikipedia.org/wiki/Tagged_union[__variant__]（变体），并且可以动态存储六种已定义的JSON值类型中的任意一种：</ref_value>
	string: A sequence of zero or more Unicode characters,	字符串：由零个或多个Unicode字符组成的序列，
	array: An ordered list of values, like {std_vector}.	数组：值的有序列表，类似于{std_vector}。
	object: A collection of name/value pairs, also known as an	对象：名称/值对的集合，也称为
	https://en.wikipedia.org/wiki/Associative_array[__associative array__].	https://en.wikipedia.org/wiki/Associative_array[__关联数组__]。
	Functions like <<ref_value_if_object,`value::if_object`>> actually return a pointer to the object if the value is an object, otherwise they return null. This allows them to be used both in boolean contexts as above, and in assignments or conditional expressions to capture the value of the pointer:	诸如 <<ref_value_if_object,`value::if_object`>> 的函数在值为对象时返回指向该对象的指针，否则返回空指针。这使得它们既可用于上述的布尔上下文，也可用于赋值或条件表达式中，以捕获指针的值：</ref_value_if_object,`value::if_object`>
	After a <<ref_value>> is constructed, its kind can change depending on what is assigned to it, or by calling functions such as <<ref_value_emplace_array,`value::emplace_array`>> or <<ref_value_emplace_bool,`value::emplace_bool`>>. If the assignment is successful, in other words it completes without any exceptions then the value is replaced. Otherwise, the value is unchanged. All operations which can fail to modify a value offer the strong exception safety guarantee.	<<ref_value>> 构造之后，其类型可根据赋值内容或通过调用<<ref_value_emplace_array,`value::emplace_array`>> 或 <<ref_value_emplace_bool,`value::emplace_bool`>> 等函数来改变。如果赋值成功，即未引发任何异常，则该值将被替换。否则，原值保持不变。所有可能修改值失败的操作均提供强异常安全保证。</ref_value_emplace_bool,`value::emplace_bool`></ref_value_emplace_array,`value::emplace_array`></ref_value>
	The following table shows all of the ways to determine and access the contents of a <<ref_value>>:	下表列出了所有用于判断和访问 <<ref_value>> 内容的方法：</ref_value>
	The return value from emplace can be used to perform assignment or to capture a reference to the underlying element for later inspection or modification:	置入操作的返回值可用于执行赋值，或捕获对底层元素的引用以供后续检查或修改：
	.<<ref_value>> Accessors [%autowidth,cols=8] \|=== \|Kind \|Representation \|Emplacement \|Kind Test \|Pointer Access \|`result` Access \|Checked Access \|Unchecked Access	.<<ref_value>>访问器 [%autowidth, cols=8] \|=== \|种类 \|表示形式 \|置入 \|种类测试 \|指针访问 \|`result`访问 \|受检访问 \|非受检访问</ref_value>
	<<ref_value_emplace_array>>	<<ref_value_emplace_array>></ref_value_emplace_array>
	<<ref_value_if_array>>	<<ref_value_if_array>></ref_value_if_array>
	<<ref_value_try_as_array>>	<<ref_value_try_as_array>></ref_value_try_as_array>
	<<ref_value_as_array>>	<<ref_value_as_array>></ref_value_as_array>
	<<ref_value_get_array>>	<<ref_value_get_array>></ref_value_get_array>

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Chinese (Simplified Han script) 249 characters editedCurrent translationState: Translated

= `value` JSON ~~documents are represented in memory as instances of <~~文档在内存中表示为<<ref_value>~~>: a~~ >的实例：一种{req_Regular} ~~type which satisfies~~ 类型，满足{req_DefaultConstructible}, 、{req_CopyConstructible}, 、{req_CopyAssignable}, 、{req_MoveConstructible}, 、{req_MoveAssignable}, and many of the requirements of allocator-aware containers. It is implemented as a https://en.wikipedia.org/wiki/Tagged_union[__variant__] internally, and can dynamically store any of the six defined JSON value types:以及许多分配器感知容器的要求。它在内部实现为一个https://en.wikipedia.org/wiki/Tagged_union[__variant__]（变体），并且可以动态存储六种已定义的JSON值类型中的任意一种：</ref_value>

06/05/2026

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Chinese (Simplified Han script) 458 characters editedPrevious translationState: Needs editing (Needs rewriting)

06/05/2026

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doc/pages/dom/value_zh_Hans.adoc, string 1

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