DataPoint< T > Class Template Reference

Represents data measured using a sensor at a given time. More...

#include <data.h>

Public Member Functions
	DataPoint ()
	Construct an invalid DataPoint, holding no data.
	DataPoint (T data)
	Construct a new DataPoint object, measured now.
	DataPoint (datatime_t time, T data)
	Construct a new DataPoint object, measured at the given time.
	operator bool () const
	Check if this measurement is valid.
bool	isFresh (std::chrono::milliseconds duration) const
	Check if this measurement was taken recently.
bool	isValid () const
	Check if this measurement is valid.
datatime_t	getTime () const
	Get the time at which the measurement was taken.
T	getData () const
	Get the value of this data point.
T	getDataOrElse (T defaultData)
	Get the value of this data point, defaulting to a given value if this data point is invalid.
template<typename F>
DataPoint< std::invoke_result_t< F, T > >	transform (const F &f)
	Transforms the data in this datapoint by the given function.

Detailed Description

template<typename T>
class DataPoint< T >

Represents data measured using a sensor at a given time.

Template Parameters

T	The type of data measured from the sensor.

Constructor & Destructor Documentation

DataPoint() [1/2]

template<typename T>

robot::types::DataPoint< T >::DataPoint ( T data )

inline

Construct a new DataPoint object, measured now.

Parameters

data	The piece of data

DataPoint() [2/2]

template<typename T>

robot::types::DataPoint< T >::DataPoint ( datatime_t time, T data )

inline

Construct a new DataPoint object, measured at the given time.

Parameters

time	The time at which the data was measured.
data	The piece of data.

Member Function Documentation

getData()

template<typename T>

T robot::types::DataPoint< T >::getData ( ) const

inline

Get the value of this data point.

Returns

T The value of this data point.

Exceptions

bad_datapoint_access

If this data point is not valid.

getDataOrElse()

template<typename T>

T robot::types::DataPoint< T >::getDataOrElse ( T defaultData )

inline

Get the value of this data point, defaulting to a given value if this data point is invalid.

Parameters

defaultData

The value to return if this data point is not valid.

Returns

T The value of this data point, or defaultData.

getTime()

template<typename T>

datatime_t robot::types::DataPoint< T >::getTime ( ) const

inline

Get the time at which the measurement was taken.

UB if data point is not valid.

Returns

datatime_t The time at which the measurement was taken.

isFresh()

template<typename T>

bool robot::types::DataPoint< T >::isFresh ( std::chrono::milliseconds duration ) const

inline

Check if this measurement was taken recently.

Parameters

duration

The data is fresh if it was taken at most this many milliseconds ago.

Returns

true if the data is valid and was measured at most duration milliseconds ago, false otherwise.

isValid()

template<typename T>

bool robot::types::DataPoint< T >::isValid ( ) const

inline

Check if this measurement is valid.

Returns

bool True iff this data point has a value.

operator bool()

template<typename T>

robot::types::DataPoint< T >::operator bool ( ) const

inline

Check if this measurement is valid.

Equivalent to isValid().

Returns

bool True iff this datapoint has a value.

transform()

template<typename T>

template<typename F>

DataPoint< std::invoke_result_t< F, T > > robot::types::DataPoint< T >::transform ( const F & f )

inline

Transforms the data in this datapoint by the given function.

Template Parameters

F	A callable type that accepts T and outputs some other type.

Parameters

f	The function that transforms data.

Returns

DataPoint<std::invoke_result_t<F, T>> A new datapoint that holds the output of f(getData()) and has the same timestamp as this datapoint if it's valid, otherwise an empty datapoint.

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

• src/world_interface/data.h