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Internally, the container computes a hash table over the keys so that the complexity of lookups is in constant time, on average.
Internally, the container computes a hash table over the keys so that the complexity of lookups is in constant time, on average.在内部，该容器会对键值进行哈希处理，从而使得查找操作的复杂度平均保持在恒定时间内。
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Similar to the `std` counterpart, elements may be accessed directly by their key with bounds checking using <<ref_object_at>>, or without bounds checking using <<ref_object_operator_lb_rb>> which creates a null element if the key does not already exist:
Similar to the `std` counterpart, elements may be accessed directly by their key with bounds checking using <<ref_object_at>>, or without bounds checking using <<ref_object_operator_lb_rb>> which creates a null element if the key does not already exist:与 `std` 对应容器类似，可通过 &lt;<ref_object_at>&gt; 使用边界检查直接按键访问元素，或通过 &lt;<ref_object_operator_lb_rb>&gt; 进行无边界检查访问（若键不存在则创建空元素）：</ref_object_operator_lb_rb></ref_object_at>
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Alternatively, elements may be inserted after construction:
Alternatively, elements may be inserted after construction:或或者，也可以在构造之后插入元素：
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Initializer lists consisting of two-element key value pairs can be used to construct objects with initial contents. These constructors may allocate memory and throw:
Initializer lists consisting of two-element key value pairs can be used to construct objects with initial contents. These constructors may allocate memory and throw:由两元素键值对组成的初始化列表可用于构造带有初始内容的对象。这些构造函数可能会分配内存并抛出异常：
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An empty object may be constructed without incurring any memory allocations using the <<default_memory_resource,default memory resource>>. A <<ref_storage_ptr>> can also be explicitly specified:
An empty object may be constructed without incurring any memory allocations using the <可以使用&lt;<default_memory_resource,default memory="" resource>>. A <<ref_storage_ptr>> can also be explicitly specified:="">&gt;来构造一个空对象，而无需进行任何内存分配。也可以显式指定一个&lt;<ref_storage_ptr>&gt;：</ref_storage_ptr></default_memory_resource,default>
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itself.
itself.（容器本身）
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All inserted values will use the same {ref_memory_resource} as the container
All inserted values will use the same所有插入的值将使用与容器本身相同的 {ref_memory_resource} as the container。
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The order of insertions is preserved, as long as there are no removals.
The order of insertions is preserved, as long as there are no removals.只要不发生删除操作，插入顺序即被保留。
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and removals.
and removals.（删除）
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Iterators are ordinary pointers, and may become invalidated on insertions
Iterators are ordinary pointers, and may become invalidated on insertions迭代器是普通指针，在插入或删除操作时可能会失效。
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The elements are stored contiguously as instances of <<ref_key_value_pair>>.
The elements are stored contiguously as instances of <<元素以 &lt;<ref_key_value_pair>&gt; 的实例形式连续存储。</ref_key_value_pair>>.
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= `object` A <<ref_value>> stores an instance of <<ref_object>> as the underlying representation for a JSON object. Instances of the <<ref_object>> type are associative containers holding key and value pairs, where the key is a <<ref_string_view>> and the mapped type is a <<ref_value>>. These containers are modelled after standard maps with these properties:
= `object` A <&lt;<ref_value>> stores an instance of <<ref_object>> as the underlying representation for a JSON object. Instances of the <<ref_object>> type are associative containers holding key and value pairs, where the key is a <<ref_string_view>> and the mapped type is a <<ref_value>>. These containers are modelled after standard maps with these properties:&gt; 使用 &lt;<ref_object>&gt; 的实例作为 JSON 对象的底层表示。&lt;<ref_object>&gt; 类型的实例是一种关联容器，存储键值对，其中键为 &lt;<ref_string_view>&gt;，映射的值类型为 &lt;<ref_value>&gt;。此类容器以标准映射（map）为模型，具有以下特性：</ref_value></ref_string_view></ref_object></ref_object></ref_value>
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Processed 12 strings from the uploaded files (skipped: 0, not found: 0, updated: 12).
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then its type is `double`. Otherwise, if the number is positive and its value is greater than `INT64_MAX`, then its type is `std::uint64_t`. All other numbers are parsed as `std::int64_t`.
then its type is `double`. Otherwise, if the number is positive and its value is greater than `INT64_MAX`, then its type is `std::uint64_t`. All other numbers are parsed as 则其类型为`double`。否则，若数字为正数且其值大于`INT64_MAX`，则其类型为`std::uint64_t`。其余所有数字均被解析为`std::int64_t`.。
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is positive and its value is greater than `UINT64_MAX`,
is positive and its value is greater than 为正数且其值大于`UINT64_MAX`,，
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is negative and its value is less than `INT64_MIN`, or
is negative and its value is less than 为负数且其值小于`INT64_MIN`, or，或
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contains an exponent, or
contains an exponent, or包含指数，或
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contains a decimal point, or
contains a decimal point, or包含小数点，或
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More formally, if the number:
More formally, if the number:更正式地，如果该数字：
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When parsing a JSON document, the type used to represent a number is not explicitly specified and must be determined from its value. In general, the parser will choose the best type which can accurately store the number as it appears in the document. Integers (i.e. numbers without decimals or exponents) that cannot be represented by `std::uint64_t` and `std::int64_t` will be represented as `double` to preserve their magnitude:
When parsing a JSON document, the type used to represent a number is not explicitly specified and must be determined from its value. In general, the parser will choose the best type which can accurately store the number as it appears in the document. Integers (i.e. numbers without decimals or exponents) that cannot be represented by在解析 JSON 文档时，数字的表示类型并未显式指定，而必须根据其值来确定。通常，解析器会选择能够精确存储文档中所出现数字的最佳类型。对于整数（即不带小数部分或指数的数字），若其值无法用 `std::uint64_t` and或 `std::int64_t` will be represented as `double` to preserve their magnitude:表示，则会以 `double` 类型存储，以保留其数量级。
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