Boost Json Translation (zh_Hans)/Doc / Pages / Conversion / Alloc (adoc) — Chinese (Simplified Han script) @ Boost-Weblate: = Allocation Control As <<ref_value_from>> creates a <<ref

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	= Allocation Control As <<ref_value_from>> creates a <<ref_value>> object, users may want to control the way memory is allocated for it. For this reason the function has an optional <<ref_storage_ptr>> parameter, that is used to set the {ref_memory_resource} for the result.	= 分配控制由于<<ref_value_from>>会创建一个<<ref_value>>对象，用户可能希望控制其内存分配方式。因此，该函数具有一个可选的 <<ref_storage_ptr>> 参数，用于为结果指定{ref_memory_resource}。</ref_storage_ptr></ref_value></ref_value_from>
	<<ref_value_to>> does not have a similar parameter, as <<ref_value>> is not created.	<<ref_value_to>> 没有类似的参数，因为该函数不会创建 <<ref_value>> 对象。</ref_value></ref_value_to>
	As the conversion result is set via an output parameter of type `value&`, the intended <<ref_storage_ptr>> is correctly propagated. But users still should take care to not create temporaries using the default {ref_memory_resource} by accident.	由于转换结果是通过类型为`value&`的输出参数设置的，因此预期的<<ref_storage_ptr>>会被正确传播。但用户仍需注意，避免意外创建使用默认 {ref_memory_resource} 的临时对象。</ref_storage_ptr>
	For example, consider this alternative implementation of `tag_invoke` for `ip_address` from the section <<custom_conversions>>.	例如，考虑<<custom_conversions>>节中针对`ip_address`的`tag_invoke`的替代实现。</custom_conversions>
	``` void tag_invoke( const value_from_tag&, value& jv, ip_address const& addr ) { jv = array{ b[0], b[1], b[2], b[3] }; } ```	``` void tag_invoke( const value_from_tag&, value& jv, ip_address const& addr ) { jv = array{ b[0], b[1], b[2], b[3] }; } ```
	This implementation explicitly creates an <<ref_array>> rather than relying on assignment from an initializer list. But the array uses default {ref_memory_resource}, not the one used by `jv`.	该实现显式创建了一个 <<ref_array>>，而不是依赖于初始化列表的赋值。但该数组使用的是默认的 {ref_memory_resource}，而不是`jv`所使用的内存资源。</ref_array>
	To avoid creating such temporaries with an incorrect {ref_memory_resource}, using <<ref_value>>'s member functions <<ref_value_emplace_array>>, <<ref_value_emplace_object>>, and <<ref_value_emplace_string>> can be helpful.	为避免创建使用错误 {ref_memory_resource} 的临时对象，可以借助 <<ref_value>> 的成员函数 <<ref_value_emplace_array>>、<<ref_value_emplace_object>> 和 <<ref_value_emplace_string>>。</ref_value_emplace_string></ref_value_emplace_object></ref_value_emplace_array></ref_value>

	English	Chinese (Simplified Han script)	Actions
	= Allocation Control As <<ref_value_from>> creates a <<ref_value>> object, users may want to control the way memory is allocated for it. For this reason the function has an optional <<ref_storage_ptr>> parameter, that is used to set the {ref_memory_resource} for the result.	= 分配控制由于<<ref_value_from>>会创建一个<<ref_value>>对象，用户可能希望控制其内存分配方式。因此，该函数具有一个可选的 <<ref_storage_ptr>> 参数，用于为结果指定{ref_memory_resource}。</ref_storage_ptr></ref_value></ref_value_from>
	<<ref_value_to>> does not have a similar parameter, as <<ref_value>> is not created.	<<ref_value_to>> 没有类似的参数，因为该函数不会创建 <<ref_value>> 对象。</ref_value></ref_value_to>
	As the conversion result is set via an output parameter of type `value&`, the intended <<ref_storage_ptr>> is correctly propagated. But users still should take care to not create temporaries using the default {ref_memory_resource} by accident.	由于转换结果是通过类型为`value&`的输出参数设置的，因此预期的<<ref_storage_ptr>>会被正确传播。但用户仍需注意，避免意外创建使用默认 {ref_memory_resource} 的临时对象。</ref_storage_ptr>
	For example, consider this alternative implementation of `tag_invoke` for `ip_address` from the section <<custom_conversions>>.	例如，考虑<<custom_conversions>>节中针对`ip_address`的`tag_invoke`的替代实现。</custom_conversions>
	``` void tag_invoke( const value_from_tag&, value& jv, ip_address const& addr ) { jv = array{ b[0], b[1], b[2], b[3] }; } ```	``` void tag_invoke( const value_from_tag&, value& jv, ip_address const& addr ) { jv = array{ b[0], b[1], b[2], b[3] }; } ```
	This implementation explicitly creates an <<ref_array>> rather than relying on assignment from an initializer list. But the array uses default {ref_memory_resource}, not the one used by `jv`.	该实现显式创建了一个 <<ref_array>>，而不是依赖于初始化列表的赋值。但该数组使用的是默认的 {ref_memory_resource}，而不是`jv`所使用的内存资源。</ref_array>
	To avoid creating such temporaries with an incorrect {ref_memory_resource}, using <<ref_value>>'s member functions <<ref_value_emplace_array>>, <<ref_value_emplace_object>>, and <<ref_value_emplace_string>> can be helpful.	为避免创建使用错误 {ref_memory_resource} 的临时对象，可以借助 <<ref_value>> 的成员函数 <<ref_value_emplace_array>>、<<ref_value_emplace_object>> 和 <<ref_value_emplace_string>>。</ref_value_emplace_string></ref_value_emplace_object></ref_value_emplace_array></ref_value>

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Chinese (Simplified Han script) 201 characters editedCurrent translationState: Translated

= ~~Allocation Control As <<ref_value_from>> creates a <<ref_value>> object, users may want to control the way memory is allocated for it. For this~~ 分配控制由于<<ref_value_from>>会创建一个<<ref_value>>对象，用户可能希望控制其内存分配方式。因此，该函数具有一个可选的 <<ref_storage_ptr>> 参数，用于为结果指定{ref_memory_reaso~~n the function has an optional <<ref_storage_ptr>> parameter, that is used to set the {ref_memory_resource} for the result.~~urce}。</ref_storage_ptr></ref_value></ref_value_from>

06/05/2026

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Chinese (Simplified Han script) 274 characters editedPrevious translationState: Needs editing (Needs rewriting)

06/05/2026

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