toolbox::io::dataset_t< Derived, DataType > Class Template Reference

数据集基类/Abstract base class for datasets More...

#include <dataset.hpp>

Public Types
using	data_type = DataType
	数据类型别名/Type alias for data type

Public Member Functions
std::size_t	size () const
	获取数据集大小/Get the size of the dataset
std::optional< DataType >	operator[] (std::size_t index) const
	通过下标访问数据/Access data by index
std::optional< DataType >	at (std::size_t index) const
	通过下标访问数据/Access data by index
std::optional< DataType >	get_item (std::size_t index) const
	获取指定索引的数据/Get data at the specified index
std::optional< DataType >	get_next ()
	获取下一个元素并推进内部索引/Get the next element and advance the internal index
std::optional< DataType >	peek_next () const
	查看下一个元素但不推进索引/Peek the next element without advancing the index
void	reset_iterator ()
	重置内部迭代器索引/Reset the internal iterator index
std::size_t	current_index () const
	获取当前迭代器索引/Get the current iterator index
	dataset_t (const dataset_t &)=delete
	禁用拷贝构造/Copy constructor is disabled
dataset_t &	operator= (const dataset_t &)=delete
	禁用拷贝赋值/Copy assignment is disabled
	dataset_t (dataset_t &&)=delete
	禁用移动构造/Move constructor is disabled
dataset_t &	operator= (dataset_t &&)=delete
	禁用移动赋值/Move assignment is disabled

Protected Member Functions
	dataset_t ()=default
	构造函数/Constructor
	~dataset_t ()=default
	析构函数/Destructor

Detailed Description

template<typename Derived, typename DataType>
class toolbox::io::dataset_t< Derived, DataType >

数据集基类/Abstract base class for datasets

Template Parameters

Derived	派生类类型/Derived class type
DataType	数据类型/Data type

// 示例：自定义一个点云数据集/Example: Custom point cloud dataset
class my_dataset : public dataset_t<my_dataset, int> {
public:
  std::size_t size_impl() const { return 100; }
  std::optional<int> at_impl(std::size_t idx) const { return idx < 100 ?
std::optional<int>(idx) : std::nullopt; }
};
my_dataset ds;
auto v = ds[5]; // 获取第5个元素/Get the 5th element
auto next = ds.get_next(); // 获取下一个元素/Get next element
ds.reset_iterator(); // 重置迭代器/Reset iterator

Member Typedef Documentation

data_type

template<typename Derived , typename DataType >

using toolbox::io::dataset_t< Derived, DataType >::data_type = DataType

数据类型别名/Type alias for data type

Constructor & Destructor Documentation

dataset_t() [1/3]

template<typename Derived , typename DataType >

toolbox::io::dataset_t< Derived, DataType >::dataset_t ( )

protecteddefault

构造函数/Constructor

~dataset_t()

template<typename Derived , typename DataType >

toolbox::io::dataset_t< Derived, DataType >::~dataset_t ( )

protecteddefault

析构函数/Destructor

dataset_t() [2/3]

template<typename Derived , typename DataType >

toolbox::io::dataset_t< Derived, DataType >::dataset_t ( const dataset_t< Derived, DataType > &  )

delete

禁用拷贝构造/Copy constructor is disabled

dataset_t() [3/3]

template<typename Derived , typename DataType >

toolbox::io::dataset_t< Derived, DataType >::dataset_t ( dataset_t< Derived, DataType > &&  )

delete

禁用移动构造/Move constructor is disabled

Member Function Documentation

at()

template<typename Derived , typename DataType >

std::optional< DataType > toolbox::io::dataset_t< Derived, DataType >::at ( std::size_t  index ) const

inline

通过下标访问数据/Access data by index

Parameters

index

元素索引/Element index

Returns

对应索引的数据（可选）/Data at the given index (optional)

auto item = ds.at(10); // 获取第10个元素/Get the 10th element

current_index()

template<typename Derived , typename DataType >

std::size_t toolbox::io::dataset_t< Derived, DataType >::current_index ( ) const

inline

获取当前迭代器索引/Get the current iterator index

Returns

当前索引/Current index

std::size_t idx = ds.current_index(); // 获取当前索引/Get current index

get_item()

template<typename Derived , typename DataType >

std::optional< DataType > toolbox::io::dataset_t< Derived, DataType >::get_item ( std::size_t  index ) const

inline

获取指定索引的数据/Get data at the specified index

Parameters

index

元素索引/Element index

Returns

对应索引的数据（可选）/Data at the given index (optional)

auto item = ds.get_item(0); // 获取第0个元素/Get the 0th element

get_next()

template<typename Derived , typename DataType >

std::optional< DataType > toolbox::io::dataset_t< Derived, DataType >::get_next ( )

inline

获取下一个元素并推进内部索引/Get the next element and advance the internal index

Returns

下一个元素（可选）/Next element (optional)

Note

修改为非const方法，因为它改变了对象状态/Changed to non-const because it modifies object state

ds.reset_iterator();
auto first = ds.get_next(); // 获取第一个元素/Get the first element
auto second = ds.get_next(); // 获取第二个元素/Get the second element

operator=() [1/2]

template<typename Derived , typename DataType >

dataset_t & toolbox::io::dataset_t< Derived, DataType >::operator= ( const dataset_t< Derived, DataType > &  )

delete

禁用拷贝赋值/Copy assignment is disabled

operator=() [2/2]

template<typename Derived , typename DataType >

dataset_t & toolbox::io::dataset_t< Derived, DataType >::operator= ( dataset_t< Derived, DataType > &&  )

delete

禁用移动赋值/Move assignment is disabled

operator[]()

template<typename Derived , typename DataType >

std::optional< DataType > toolbox::io::dataset_t< Derived, DataType >::operator[] ( std::size_t  index ) const

inline

通过下标访问数据/Access data by index

Parameters

index

元素索引/Element index

Returns

对应索引的数据（可选）/Data at the given index (optional)

auto item = ds[3]; // 获取第3个元素/Get the 3rd element

peek_next()

template<typename Derived , typename DataType >

std::optional< DataType > toolbox::io::dataset_t< Derived, DataType >::peek_next ( ) const

inline

查看下一个元素但不推进索引/Peek the next element without advancing the index

Returns

下一个元素（可选）/Next element (optional)

ds.reset_iterator();
auto peeked = ds.peek_next(); // 查看下一个元素/Peek next element

reset_iterator()

template<typename Derived , typename DataType >

void toolbox::io::dataset_t< Derived, DataType >::reset_iterator ( )

inline

重置内部迭代器索引/Reset the internal iterator index

ds.reset_iterator(); // 重置到第一个元素/Reset to the first element

size()

template<typename Derived , typename DataType >

std::size_t toolbox::io::dataset_t< Derived, DataType >::size ( ) const

inline

获取数据集大小/Get the size of the dataset

Returns

数据集中的元素数量/Number of elements in the dataset

my_dataset ds;
std::size_t n = ds.size(); // 获取数据集大小/Get dataset size

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The documentation for this class was generated from the following file:

• src/include/cpp-toolbox/io/dataset/dataset.hpp