ccgl::utils_array Namespace Reference

Array related functions include vector and pointer array. More...

Classes
class	Array2D
	Rudimentary RAII class of 2D Array which occupy successive memory. More...

Functions
void	Output1DArrayToTxtFile (int n, const float *data, const char *filename)
	Write 1D array to a file. More...
void	Output2DArrayToTxtFile (int rows, int cols, const float **data, const char *filename)
	Write 2D array to a file. More...
template<typename T >
void	Read1DArrayFromTxtFile (const char *filename, int &rows, T *&data)
	Read 1D array from file The input file should follow the format: a 1D array sized rows * 1. More...
template<typename T >
void	Read2DArrayFromTxtFile (const char *filename, int &rows, T **&data)
	Read 2D array from file The input file should follow the format: a 2D array sized rows * rows. More...
template<typename T >
void	Read2DArrayFromString (const char *s, int &rows, T **&data)
	Read 2D array from string The input string should follow the format: float value, total number is rows * rows. More...
template<typename T , typename INI_T >
bool	Initialize1DArray (int row, T *&data, INI_T init_value)
	Initialize DT_Array1D data. More...
template<typename T , typename INI_T >
bool	Initialize1DArray (int row, T *&data, INI_T *init_data)
	Initialize DT_Array1D data based on an existed array. More...
template<typename T , typename INI_T >
bool	Initialize1DArray4ItpWeight (int row, T *&data, INI_T *init_data, int itp_weight_data_length)
template<typename T , typename INI_T >
bool	Initialize2DArray (int row, int col, T **&data, INI_T init_value)
	Initialize DT_Array2D data. More...
template<typename T , typename INI_T >
bool	Initialize2DArray (int row, int col, T **&data, INI_T **init_data)
	Initialize DT_Array2D data based on an existed array The usage of const T * const * is refers to http://blog.csdn.net/pmt123456/article/details/50813564. More...
template<typename T1 , typename T2 >
bool	Initialize2DArray (T1 *init_data, int &rows, int &max_cols, T2 **&data)
	Initialize irregular DT_Array2D data based on an existed 1D array. More...
template<typename T >
void	Release1DArray (T *&data)
	Release DT_Array1D data. More...
template<typename T >
void	Release2DArray (T **&data)
	Release DT_Array2D data. More...
template<typename T >
void	BatchRelease1DArray (T *&data,...)
	Batch release of 1D array Variable arguments with the end of nullptr. More...
template<typename T >
void	BatchRelease2DArray (int nrows, T **&data,...)
	Batch release of 2D array,. More...
template<typename T >
bool	Read2DArrayFromCsvFile (const char *filename, const vector< string > *header, std::vector< std::vector< T > > &data)
	Read csv. More...
template<typename T >
bool	ValueInVector (T val, const vector< T > &vec)
	If value in vector container. More...
template<typename T >
void	RemoveValueInVector (T val, vector< T > &vec)
	Remove value in vector container. More...

Detailed Description

Array related functions include vector and pointer array.

Function Documentation

BatchRelease1DArray()

template<typename T >

void ccgl::utils_array::BatchRelease1DArray	(	T *&	data,
			...
	)

Batch release of 1D array Variable arguments with the end of nullptr.

The input parameters are listed as data, data2, ... , dataN, and ended with nullptr.

Example:

BatchRelease1DArray(array1, array2, array3, nullptr);

Warning

After batch release, the variable will not be set to nullptr. So, do not use these variables any more. BTW, this function will not cause memory leak.

USE WITH ALL CAUTIONS CLEARLY AWARED.

BatchRelease2DArray()

template<typename T >

void ccgl::utils_array::BatchRelease2DArray	(	int	nrows,
		T **&	data,
			...
	)

Batch release of 2D array,.

See also

BatchRelease1DArray Variable arguments with the end of nullptr.

Example:

BatchRelease2DArray(rows, array1, array2, array3, nullptr);

Parameters

[in]	nrows	Rows
[in]	data	The input parameters are listed as data, data2, ... , dataN, and ended with nullptr.

Warning

USE WITH ALL CAUTIONS CLEARLY AWARED.

Initialize1DArray() [1/2]

template<typename T , typename INI_T >

bool ccgl::utils_array::Initialize1DArray	(	int	row,
		T *&	data,
		INI_T *	init_data
	)

Initialize DT_Array1D data based on an existed array.

Parameters

[in]	row
[in]	data
[in]	init_data

Returns

True if succeed, else false and the error message will print as well.

Initialize1DArray() [2/2]

template<typename T , typename INI_T >

bool ccgl::utils_array::Initialize1DArray	(	int	row,
		T *&	data,
		INI_T	init_value
	)

Initialize DT_Array1D data.

Parameters

[in]	row
[in]	data
[in]	init_value

Returns

True if succeed, else false and the error message will print as well.

Initialize2DArray() [1/3]

template<typename T , typename INI_T >

bool ccgl::utils_array::Initialize2DArray	(	int	row,
		int	col,
		T **&	data,
		INI_T **	init_data
	)

Initialize DT_Array2D data based on an existed array The usage of const T * const * is refers to http://blog.csdn.net/pmt123456/article/details/50813564.

Parameters

[in]	row
[in]	col
[in]	data
[in]	init_data	dimension MUST BE (row, col)

Returns

True if succeed, else false and the error message will print as well.

Initialize2DArray() [2/3]

template<typename T , typename INI_T >

bool ccgl::utils_array::Initialize2DArray	(	int	row,
		int	col,
		T **&	data,
		INI_T	init_value
	)

Initialize DT_Array2D data.

The 2D array are created in a successive memory.

1. Create a 1D array of row data pointers with the length of row
2. Create a 1D array of data pool with the length of row * col
3. Iteratively point row pointers to appropriate positions in data pool

Refers to https://stackoverflow.com/a/21944048/4837280

Parameters

[in]	row
[in]	col
[in]	data
[in]	init_value

Returns

True if succeed, else false and the error message will print as well.

Initialize2DArray() [3/3]

template<typename T1 , typename T2 >

bool ccgl::utils_array::Initialize2DArray	(	T1 *	init_data,
		int &	rows,
		int &	max_cols,
		T2 **&	data
	)

Initialize irregular DT_Array2D data based on an existed 1D array.

Parameters

[in]	init_data	Initial 1D array
[out]	rows	Rows count
[out]	max_cols	Maximum cols count
[out]	data	Irregular 2D array

Returns

True if succeed, else false and the error message will print as well.

Output1DArrayToTxtFile()

void ccgl::utils_array::Output1DArrayToTxtFile	(	int	n,
		const float *	data,
		const char *	filename
	)

Write 1D array to a file.

See also

Read1DArrayFromTxtFile(), Read2DArrayFromTxtFile(), Output2DArrayToTxtFile()

Parameters

[in]

n,data,filename

Output2DArrayToTxtFile()

void ccgl::utils_array::Output2DArrayToTxtFile	(	int	rows,
		int	cols,
		const float **	data,
		const char *	filename
	)

Write 2D array to a file.

See also

Read1DArrayFromTxtFile(), Read2DArrayFromTxtFile(), Output1DArrayToTxtFile()

Parameters

[in]

rows,cols,data,filename

Read1DArrayFromTxtFile()

template<typename T >

void ccgl::utils_array::Read1DArrayFromTxtFile	(	const char *	filename,
		int &	rows,
		T *&	data
	)

Read 1D array from file The input file should follow the format: a 1D array sized rows * 1.

The size of data is rows

See also

Read2DArrayFromTxtFile(), Output1DArrayToTxtFile(), Output2DArrayToTxtFile()

Parameters

[in]	filename
[out]	rows,data

Read2DArrayFromCsvFile()

template<typename T >

bool ccgl::utils_array::Read2DArrayFromCsvFile	(	const char *	filename,
		const vector< string > *	header,
		std::vector< std::vector< T > > &	data
	)

Read csv.

Parameters

[in]	filename
[in]	header	Only the columns in the header will be read and stored in data. The order of the data is the same as the header.
[out]	data

Read2DArrayFromString()

template<typename T >

void ccgl::utils_array::Read2DArrayFromString	(	const char *	s,
		int &	rows,
		T **&	data
	)

Read 2D array from string The input string should follow the format: float value, total number is rows * rows.

The size of data is rows * (rows + 1), the first element of each row is the rows.

Parameters

[in]	s
[out]	rows,data

Read2DArrayFromTxtFile()

template<typename T >

void ccgl::utils_array::Read2DArrayFromTxtFile	(	const char *	filename,
		int &	rows,
		T **&	data
	)

Read 2D array from file The input file should follow the format: a 2D array sized rows * rows.

The size of data is rows * (rows + 1), the first element of each row is the rows

See also

Read1DArrayFromTxtFile(), Output1DArrayToTxtFile(), Output2DArrayToTxtFile()

Parameters

[in]	filename
[out]	rows,data

Release1DArray()

template<typename T >

void ccgl::utils_array::Release1DArray

(

T *&

data

)

Release DT_Array1D data.

Parameters

[in]

data

Release2DArray()

template<typename T >

void ccgl::utils_array::Release2DArray

(

T **&

data

)

Release DT_Array2D data.

Parameters

[in]

data

RemoveValueInVector()

template<typename T >

void ccgl::utils_array::RemoveValueInVector	(	T	val,
		vector< T > &	vec
	)

Remove value in vector container.

Parameters

[in]	val	Value to be removed, e.g., a int, or float
[in]	vec	Vector container, data type is consistent with val

ValueInVector()

template<typename T >

bool ccgl::utils_array::ValueInVector	(	T	val,
		const vector< T > &	vec
	)

If value in vector container.

Parameters

[in]	val	Value, e.g., a int, or float
[in]	vec	Vector container, data type is consistent with val

Returns

True if val is in vec, otherwise False