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**string**: A sequence of zero or more Unicode characters,
**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，
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**number**: An integral or floating point value.
**number**: An integral or floating point value.数值**：整型或浮点型值。
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**boolean**: A boolean: either `true` or `false`.
**boolean**: A boolean: either 布尔值**：布尔类型，取值为`true` or 或`false`.。
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https://en.cppreference.com/w/cpp/utility/variant/monostate[__monostate__] value, equivalent to `nullptr`.
https://en.cppreference.com/w/cpp/utility/variant/monostate[__monostate__] value, equivalent to （单态）值，等同于`nullptr`.。
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**null**: A
**null**: A空值**：一种
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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 documents are represented in memory as instances of <文档在内存中表示为&lt;<ref_value>>: a &gt;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>
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<<ref_string>> directly supports access to its storage in the range `[size(), capacity())`. This can be used for efficient assembly of a string from several parts. After the string is assembled, use the member function <<ref_string_grow>> to update the string's size and insert the null terminator. For example:
<&lt;<ref_string>> directly supports access to its storage in the range `[size(), capacity())`. This can be used for efficient assembly of a string from several parts. After the string is assembled, use the member function <<ref_string_grow>> to update the string's size and insert the null terminator. For example:&gt; 直接支持访问其在`[size(), capacity())`范围内的存储空间。这可用于高效地将字符串从多个部分组装起来。字符串组装完成后，可调用成员函数 &lt;<ref_string_grow>&gt; 来更新字符串的大小并插入空终止符。例如：</ref_string_grow></ref_string>
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Accessing Storage Beyond `size()`
Accessing Storage Beyond 访问超出`size()`范围的存储空间
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When a <<ref_string>> is formatted to a {std_ostream}, the result is a valid JSON. That is, the result will be double quoted and the contents properly escaped per the JSON specification.
When a <当&lt;<ref_string>> is formatted to a {std_ostream}, the result is a valid JSON. That is, the result will be double quoted and the contents properly escaped per the JSON specification.&gt;被格式化到{std_ostream}时，结果是一个有效的JSON。即输出结果将被双引号括起来，并且内容会根据JSON规范进行正确转义。</ref_string>
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Formatted Output
Formatted Output格式化输出
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A <<ref_string>> may be constructed using the <<default_memory_resource,default memory resource>> without incurring any memory allocations. Alternatively, a <<ref_storage_ptr>> can be provided explicitly:
A <&lt;<ref_string>> may be constructed using the <&gt; 可使用 &lt;<default_memory_resource,default memory="" resource>> without incurring any memory allocations. Alternatively, a <<ref_storage_ptr>> can be provided explicitly:="">&gt;（默认构造资源） 进行构造，且不会产生任何内存分配。或者，也可以显式提供一个 &lt;<ref_storage_ptr>&gt;：</ref_storage_ptr></default_memory_resource,default></ref_string>
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With the removal of overloads that specify parameters for a substring, a member function `subview` that returns a <<ref_string_view>> is provided to facilitate cheap substring operations:
With the removal of overloads that specify parameters for a substring, a member function `subview` that returns a <<ref_string_view>> is provided to facilitate cheap substring operations:随着用于指定子字符串参数的重载被移除，库提供了一个成员函数`subview`， 用于返回一个 &lt;<ref_string_view>&gt;，从而支持高效的子字符串操作：</ref_string_view>
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This design removes several redundant overloads from the interface. For example, the 11 overloads of `std::string::insert` are reduced to just 3 in <<ref_string>>, while still providing identical functionality. In addition to these changes, overloads taking a `std::initializer_list<char>` parameter have been removed. Such overloads have little use, as they serve as little more than wrappers for arrays with an inefficient syntax:
This design removes several redundant overloads from the interface. For example, the 11 overloads of `std::string::insert` are reduced to just 3 in <<ref_string>>, while still providing identical functionality. In addition to these changes, overloads taking a `std::initializer_list<char>` parameter have been removed. Such overloads have little use, as they serve as little more than wrappers for arrays with an inefficient syntax:这一设计从接口中移除了多个冗余的重载。例如，`std::string::insert` 原本有 11 个重载，而在 &lt;<ref_string>&gt; 中被减少到仅 3 个，同时仍提供完全相同的功能。除此之外，接受 `std::initializer_list<char>` 参数的重载也被移除。这类重载用途有限，因为它们本质上只是对字符数组的封装，且语法效率低下：</char></ref_string>
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are replaced with an overload accepting a <<ref_string_view>> parameter.
are replaced with an overload accepting a <<被一个接受 &lt;<ref_string_view>&gt; 参数的重载所替代。</ref_string_view>> parameter.
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specifies the length of the string
specifies the length of the string指定字符串的长度,
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a parameter of type `const_pointer` and a `size_type` parameter that
a parameter of type 一个`const_pointer` and a 类型的参数和一个`size_type` parameter that参数，该参数用于
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a `const_pointer` parameter, or
a 一个`const_pointer` parameter, or参数，或
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`size_type` parameters that specify a substring, or
用于指定子字符串的`size_type` parameters that specify a substring, or类型的参数，或
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a parameter of a type convertible to <<ref_string_view>> and two
a parameter of a type convertible to <<一个可转换为 &lt;<ref_string_view>&gt; 类型的参数以及两个</ref_string_view>> and two
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