Classes
struct	BindingDetails
	This structure holds all of the information about bindings documentation. More...

class	Example

struct	IsStdVector
	Metaprogramming structure for vector detection. More...

struct	IsStdVector< std::vector< T, A > >
	Metaprogramming structure for vector detection. More...

class	LongDescription

class	NullOutStream
	Used for Log::Debug when not compiled with debugging symbols. More...

struct	ParamData
	This structure holds all of the information about a single parameter, including its value (which is set when ParseCommandLine() is called). More...

class	PrefixedOutStream
	Allows us to output to an ostream with a prefix at the beginning of each line, in the same way we would output to cout or cerr. More...

class	ProgramName

class	SeeAlso

class	ShortDescription

Functions
std::string	CamelCase (std::string s, bool lower)
	Given an snake_case like, e.g., "logistic_regression", return CamelCase(e.g. More...

void	DisableBacktrace ()
	Disable backtraces. More...

void	DisableVerbose ()
	Turn verbose output off. More...

void	EnableTimers ()
	Enable timing. More...

void	EnableVerbose ()
	Turn verbose output on. More...

template
T *	GetParamPtr (const std::string ¶mName)
	Return a pointer. More...

template
T &	GetParamWithInfo (const std::string ¶mName)
	Return the matrix part of a matrix + dataset info parameter. More...

std::string	GetVersion ()
	This will return either "mlpack x.y.z" or "mlpack master-XXXXXXX" depending on whether or not this is a stable version of mlpack or a git repository. More...

std::string	HyphenateString (const std::string &str, const std::string &prefix, const bool force=false)
	Hyphenate a string or split it onto multiple 80-character lines, with some amount of padding on each line. More...

std::string	HyphenateString (const std::string &str, int padding)
	Hyphenate a string or split it onto multiple 80-character lines, with some amount of padding on each line. More...

void	ReportIgnoredParam (const std::vector< std::pair< std::string, bool >> &constraints, const std::string ¶mName)
	Report that a parameter is ignored, if each of the constraints given are satisfied. More...

void	ReportIgnoredParam (const std::string ¶mName, const std::string &reason)
	If the given parameter is passed, report that it is ignored, supplying a custom reason. More...

void	RequireAtLeastOnePassed (const std::vector< std::string > &constraints, const bool fatal=true, const std::string &customErrorMessage="")
	Require that at least one of the given parameters in the constraints set was passed to the IO object; otherwise, issue a warning or fatal error, optionally with the given custom error message. More...

void	RequireNoneOrAllPassed (const std::vector< std::string > &constraints, const bool fatal=true, const std::string &customErrorMessage="")
	Require that either none or all of the given parameters in the constraints set were passed to the IO object; otherwise, issue a warning or fatal error, optionally with the given custom error message. More...

void	RequireOnlyOnePassed (const std::vector< std::string > &constraints, const bool fatal=true, const std::string &customErrorMessage="")
	Require that only one of the given parameters in the constraints set was passed to the IO object; otherwise, issue a warning or fatal error, optionally with the given custom error message. More...

template
void	RequireParamInSet (const std::string ¶mName, const std::vector< T > &set, const bool fatal, const std::string &errorMessage)
	Require that a given parameter is in a set of allowable parameters. More...

template
void	RequireParamValue (const std::string ¶mName, const std::function< bool(T)> &conditional, const bool fatal, const std::string &errorMessage)
	Require that a given parameter satisfies the given conditional function. More...

void	ResetTimers ()
	Reset the status of all timers. More...

template
void	SetInputParam (const std::string &name, T &&value)
	Utility function that is used in binding tests for setting a parameter and marking it as passed; it uses copy semantics for lvalues and move semantics for rvalues. More...

template
void	SetParam (const std::string &identifier, T &value)
	Set the parameter to the given value. More...

template
void	SetParamPtr (const std::string &identifier, T *value)
	Set the parameter to the given value, given that the type is a pointer. More...

template
void	SetParamPtr (const std::string &identifier, T *value, const bool copy)
	Set the parameter to the given value, given that the type is a pointer. More...

template
void	SetParamWithInfo (const std::string &identifier, T &matrix, const bool *dims)
	Set the parameter (which is a matrix/DatasetInfo tuple) to the given value. More...

std::string	StripType (std::string cppType)
	Given a C++ type name, turn it into something that has no special characters that can simply be printed. More...

void	ToLower (const std::string &input, std::string &output)
	* Convert a string to lowercase letters. More...

Function Documentation

◆ CamelCase()

std::string mlpack::util::CamelCase	(	std::string	s,
		bool	lower
	)

inline

Given an snake_case like, e.g., "logistic_regression", return CamelCase(e.g.

"LogisticRegression") that can be used in bindings.

Parameters

s	input string.
lower	is of bool type. If lower is true then output must be lowerCamelCase else UpperCamelCase.

Definition at line 26 of file camel_case.hpp.

Referenced by mlpack::bindings::go::PrintDefnInput(), mlpack::bindings::go::PrintDoc(), mlpack::bindings::go::PrintInputProcessing(), mlpack::bindings::go::PrintMethodConfig(), mlpack::bindings::go::PrintMethodInit(), and mlpack::bindings::go::PrintOutputProcessing().

◆ DisableBacktrace()

void DisableBacktrace ( )

inline

Disable backtraces.

Definition at line 76 of file io_util.hpp.

References PrefixedOutStream::backtrace, and Log::Fatal.

Referenced by GetParamWithInfo().

◆ DisableVerbose()

void DisableVerbose ( )

inline

Turn verbose output off.

Definition at line 68 of file io_util.hpp.

References PrefixedOutStream::ignoreInput, and Log::Info.

Referenced by GetParamWithInfo().

◆ EnableTimers()

void EnableTimers ( )

inline

Enable timing.

Definition at line 93 of file io_util.hpp.

References Timer::EnableTiming().

Referenced by GetParamWithInfo().

◆ EnableVerbose()

void EnableVerbose ( )

inline

Turn verbose output on.

Definition at line 60 of file io_util.hpp.

References PrefixedOutStream::ignoreInput, and Log::Info.

Referenced by GetParamWithInfo().

◆ GetParamPtr()

T * GetParamPtr ( const std::string & paramName )

Return a pointer.

This function exists to work around Cython's seeming lack of support for template pointer types.

Definition at line 52 of file io_util.hpp.

Referenced by SetParamWithInfo().

◆ GetParamWithInfo()

T& mlpack::util::GetParamWithInfo ( const std::string & paramName )

Return the matrix part of a matrix + dataset info parameter.

Definition at line 118 of file io_util.hpp.

References PrefixedOutStream::backtrace, DisableBacktrace(), DisableVerbose(), EnableTimers(), Timer::EnableTiming(), EnableVerbose(), Log::Fatal, IO::GetSingleton(), PrefixedOutStream::ignoreInput, Log::Info, Timers::Reset(), ResetTimers(), and IO::timer.

◆ GetVersion()

std::string mlpack::util::GetVersion ( )

This will return either "mlpack x.y.z" or "mlpack master-XXXXXXX" depending on whether or not this is a stable version of mlpack or a git repository.

Referenced by mlpack::bindings::cli::ParseCommandLine().

◆ HyphenateString() [1/2]

std::string mlpack::util::HyphenateString	(	const std::string &	str,
		const std::string &	prefix,
		const bool	force = `false`
	)

inline

Hyphenate a string or split it onto multiple 80-character lines, with some amount of padding on each line.

This is used for option output.

Parameters

str	String to hyphenate (splits are on ' ').
prefix	Prefix to hyphenate a string with.
force	Hyphenate the string even if the length is less then 80.

Exceptions

std::invalid_argument if prefix.size() >= 80.

Definition at line 27 of file hyphenate_string.hpp.

Referenced by HyphenateString(), mlpack::bindings::python::PrintDoc(), mlpack::bindings::r::PrintDoc(), and mlpack::bindings::go::PrintDoc().

◆ HyphenateString() [2/2]

std::string mlpack::util::HyphenateString	(	const std::string &	str,
		int	padding
	)

inline

Hyphenate a string or split it onto multiple 80-character lines, with some amount of padding on each line.

This is used for option output.

Parameters

str	String to hyphenate (splits are on ' ').
padding	Amount of padding on the left for each new line.

Definition at line 82 of file hyphenate_string.hpp.

References HyphenateString().

◆ ReportIgnoredParam() [1/2]

void mlpack::util::ReportIgnoredParam	(	const std::vector< std::pair< std::string, bool >> &	constraints,
		const std::string &	paramName
	)

Report that a parameter is ignored, if each of the constraints given are satisfied.

The constraints should be a set of string/bool pairs. If all of the constraints are true, and the given parameter in 'paramName' is passed, then a warning will be issued noting that the parameter is ignored. The warning will go to Log::Warn.

Parameters

constraints	Set of constraints.
paramName	Name of parameter to check.

◆ ReportIgnoredParam() [2/2]

void mlpack::util::ReportIgnoredParam	(	const std::string &	paramName,
		const std::string &	reason
	)

If the given parameter is passed, report that it is ignored, supplying a custom reason.

The reason should specify, in short and clear terms, why the parameter is ignored. So, for example, the output may be similar to:

--iterations (-i) ignored because .

and in this case a good reason might be "SGD is not being used as an optimizer". Be sure that when you write the reason, the full message makes sense.

Parameters

paramName	Name of parameter to check.
reason	Reason that parameter is ignored, if it is passed.

◆ RequireAtLeastOnePassed()

void mlpack::util::RequireAtLeastOnePassed	(	const std::vector< std::string > &	constraints,
		const bool	fatal = `true`,
		const std::string &	customErrorMessage = `""`
	)

Require that at least one of the given parameters in the constraints set was passed to the IO object; otherwise, issue a warning or fatal error, optionally with the given custom error message.

This uses the correct binding type name for each parameter (i.e. '–parameter' for CLI bindings, 'parameter' for Python bindings).

This can be used with a set of only one constraint and the output is still sensible.

If you use a custom error message, be aware that the given output will be similar to, for example:

Should pass one of '--codes_file (-c)', '--dictionary_file (-d)', or

'--output_model_file (-M)'; !

so when you write your custom error message, be sure that the sentence makes sense. The custom error message should not have a capitalized first character and no ending punctuation (a '!' will be added by this function).

Parameters

constraints	Set of parameters from which only one should be passed.
fatal	If true, output goes to Log::Fatal instead of Log::Warn and an exception is thrown.
customErrorMessage	Error message to append.

◆ RequireNoneOrAllPassed()

void mlpack::util::RequireNoneOrAllPassed	(	const std::vector< std::string > &	constraints,
		const bool	fatal = `true`,
		const std::string &	customErrorMessage = `""`
	)

Require that either none or all of the given parameters in the constraints set were passed to the IO object; otherwise, issue a warning or fatal error, optionally with the given custom error message.

This uses the correct binding type name for each parameter (i.e. '–parameter' for CLI bindings, 'parameter' for Python bindings).

If you use a custom error message, be aware that the given output will be similar to, for example:

Must pass none or all of '--codes_file (-c)', '--dictionary_file (-d)', and

'--output_model_file (-M)'; !

so when you write your custom error message, be sure that the sentence makes sense. The custom error message should not have a capitalized first character and no ending punctuation (a '!' will be added by this function).

Parameters

constraints	Set of parameters of which none or all should be passed.
fatal	If true, output goes to Log::Fatal instead of Log::Warn and an exception is thrown.
customErrorMessage	Error message to append.

◆ RequireOnlyOnePassed()

void mlpack::util::RequireOnlyOnePassed	(	const std::vector< std::string > &	constraints,
		const bool	fatal = `true`,
		const std::string &	customErrorMessage = `""`
	)

Require that only one of the given parameters in the constraints set was passed to the IO object; otherwise, issue a warning or fatal error, optionally with the given custom error message.

This uses the correct binding type name for each parameter (i.e. '–parameter' for CLI bindings, 'parameter' for Python bindings).

If you use a custom error message, be aware that the given output will be similar to, for example:

Must specify one of '--reference_file (-r)' or '--input_model_file (-m)';

!

so when you write your custom error message, be sure that the sentence makes sense. The custom error message should not have a capitalized first character and no ending punctuation (a '!' will be added by this function).

Parameters

constraints	Set of parameters from which only one should be passed.
fatal	If true, output goes to Log::Fatal instead of Log::Warn and an exception is thrown.
customErrorMessage	Error message to append.

◆ RequireParamInSet()

void mlpack::util::RequireParamInSet	(	const std::string &	paramName,
		const std::vector< T > &	set,
		const bool	fatal,
		const std::string &	errorMessage
	)

Require that a given parameter is in a set of allowable parameters.

This is probably most useful with T = std::string. If fatal is true, then an exception is thrown. An error message is not optional and must be specified. The error message does not need to specify the values in the set; this function will already output them. So, for example, the output may be similar to:

Invalid value of '--weak_learner (-w)' specified ('something');

message>; must be one of 'decision_stump', or 'perceptron'!

so when you write the error message, make sure that the message makes sense. For example, in the message above, a good error message might be "unknown weak learner type".

Template Parameters

T	Type of parameter.

Parameters

paramName	Name of parameter to check.
set	Set of valid values for parameter.
fatal	If true, an exception is thrown and output goes to Log::Fatal.
errorMessage	Error message to output.

◆ RequireParamValue()

void mlpack::util::RequireParamValue	(	const std::string &	paramName,
		const std::function< bool(T)> &	conditional,
		const bool	fatal,
		const std::string &	errorMessage
	)

Require that a given parameter satisfies the given conditional function.

This is useful for, e.g., checking that a given parameter is greater than 0. If fatal is true, then an exception is thrown. An error message is not optional and must be specified. The error message should specify, in clear terms, what the value of the parameter should be. So, for example, the output may be similar to:

Invalid value of '--iterations (-i)' specified (-1); !

and in this case a good error message might be "number of iterations must be positive". Be sure that when you write the error message, the message makes sense.

Template Parameters

T	Type of parameter to check.

Parameters

paramName	Name of parameter to check.
conditional	Function to use to check parameter value; should return 'true' if the parameter value is okay.
fatal	If true, an exception is thrown and output goes to Log::Fatal.
errorMessage	Error message to output.

◆ ResetTimers()

void ResetTimers ( )

inline

Reset the status of all timers.

Definition at line 84 of file io_util.hpp.

References IO::GetSingleton(), Timers::Reset(), and IO::timer.

Referenced by GetParamWithInfo().

◆ SetInputParam()

void mlpack::util::SetInputParam	(	const std::string &	name,
		T &&	value
	)

Utility function that is used in binding tests for setting a parameter and marking it as passed; it uses copy semantics for lvalues and move semantics for rvalues.

Parameters

name	Name of parameter to set.
value	Value to set parameter to.

Definition at line 29 of file test_helper.hpp.

References IO::SetPassed().

◆ SetParam()

void SetParam	(	const std::string &	identifier,
		T &	value
	)

inline

Set the parameter to the given value.

Parameters

identifier	Name of parameter.
value	Value to set parameter to.

This function exists to work around Cython's lack of support for lvalue references.

Parameters

identifier	Name of parameter.
value	Value to set parameter to.

Definition at line 29 of file io_util.hpp.

◆ SetParamPtr() [1/2]

void mlpack::util::SetParamPtr	(	const std::string &	identifier,
		T *	value
	)

inline

Set the parameter to the given value, given that the type is a pointer.

Parameters

identifier	Name of parameter.
value	Value to set parameter to.

Definition at line 41 of file io_util.hpp.

◆ SetParamPtr() [2/2]

void mlpack::util::SetParamPtr	(	const std::string &	identifier,
		T *	value,
		const bool	copy
	)

inline

Set the parameter to the given value, given that the type is a pointer.

This function exists to work around both Cython's lack of support for lvalue references and also its seeming lack of support for template pointer types.

Parameters

identifier	Name of parameter.
value	Value to set parameter to.
copy	Whether or not the object should be copied.

Definition at line 48 of file io_util.hpp.

◆ SetParamWithInfo()

void mlpack::util::SetParamWithInfo	(	const std::string &	identifier,
		T &	matrix,
		const bool *	dims
	)

inline

Set the parameter (which is a matrix/DatasetInfo tuple) to the given value.

Definition at line 59 of file io_util.hpp.

References mlpack::data::categorical, GetParamPtr(), DatasetMapper< PolicyType, InputType >::MapString(), and DatasetMapper< PolicyType, InputType >::Type().

◆ StripType()

std::string mlpack::util::StripType ( std::string cppType )

inline

Given a C++ type name, turn it into something that has no special characters that can simply be printed.

This is similar to but not identical to mlpack::util::StripType().

Parameters

cppType C++ type as a string.

Returns: Stripped type with no special characters.

Definition at line 27 of file strip_type.hpp.

Referenced by mlpack::bindings::julia::GetJuliaType(), mlpack::bindings::r::GetRType(), mlpack::bindings::r::PrintInputProcessing(), mlpack::bindings::julia::PrintModelTypeImport(), mlpack::bindings::julia::PrintParamDefn(), and mlpack::bindings::r::PrintSerializeUtil().

◆ ToLower()

void mlpack::util::ToLower	(	const std::string &	input,
		std::string &	output
	)

inline

* Convert a string to lowercase letters.

* *

Parameters

input	The string to convert.
output	The string to be converted.

Definition at line 24 of file to_lower.hpp.

Classes

Functions

Function Documentation

◆ CamelCase()

◆ DisableBacktrace()

◆ DisableVerbose()

◆ EnableTimers()

◆ EnableVerbose()

◆ GetParamPtr()

◆ GetParamWithInfo()

◆ GetVersion()

◆ HyphenateString() [1/2]

◆ HyphenateString() [2/2]

◆ ReportIgnoredParam() [1/2]

◆ ReportIgnoredParam() [2/2]

◆ RequireAtLeastOnePassed()

◆ RequireNoneOrAllPassed()

◆ RequireOnlyOnePassed()

◆ RequireParamInSet()

◆ RequireParamValue()

◆ ResetTimers()

◆ SetInputParam()

◆ SetParam()

◆ SetParamPtr() [1/2]

◆ SetParamPtr() [2/2]

◆ SetParamWithInfo()

◆ StripType()

◆ ToLower()