gtsam::Symbol Class Reference

#include <Symbol.h>

Public Member Functions
unsigned char	chr () const
bool	equals (const Symbol &expected, double tol=0.0) const
	Check equality. More...
std::uint64_t	index () const
Key	key () const
	operator Key () const
	operator std::string () const
bool	operator!= (const Symbol &comp) const
bool	operator!= (Key comp) const
bool	operator< (const Symbol &comp) const
bool	operator== (const Symbol &comp) const
bool	operator== (Key comp) const
void	print (const std::string &s="") const
	Print. More...
std::string	string () const
	Return string representation of the key. More...
	Symbol ()
	Symbol (const Symbol &key)
	Symbol (Key key)
	Symbol (unsigned char c, std::uint64_t j)

Static Public Member Functions
static std::function< bool(Key)>	ChrTest (unsigned char c)

Protected Attributes
unsigned char	c_
std::uint64_t	j_

Friends
GTSAM_EXPORT friend std::ostream &	operator<< (std::ostream &, const Symbol &)
	Output stream operator that can be used with key_formatter (see Key.h). More...

Detailed Description

Character and index key used to refer to variables. Will simply cast to a Key, i.e., a large integer. Keys are used to retrieve values from Values, specify what variables factors depend on, etc.

Definition at line 37 of file inference/Symbol.h.

Constructor & Destructor Documentation

Symbol() [1/4]

gtsam::Symbol::Symbol ( )

inline

Default constructor

Definition at line 45 of file inference/Symbol.h.

Symbol() [2/4]

gtsam::Symbol::Symbol ( const Symbol &  key )

inline

Copy constructor

Definition at line 50 of file inference/Symbol.h.

Symbol() [3/4]

gtsam::Symbol::Symbol ( unsigned char  c, std::uint64_t  j  )

inline

Constructor

Definition at line 55 of file inference/Symbol.h.

Symbol() [4/4]

gtsam::Symbol::Symbol

(

Key

key

)

Constructor that decodes an integer Key

Definition at line 35 of file Symbol.cpp.

Member Function Documentation

chr()

unsigned char gtsam::Symbol::chr ( ) const

inline

Retrieve key character

Definition at line 75 of file inference/Symbol.h.

ChrTest()

std::function< bool(Key)> gtsam::Symbol::ChrTest ( unsigned char  c )

static

Return a filter function that returns true when evaluated on a Key whose character (when converted to a Symbol) matches c. Use this with the Values::filter() function to retrieve all key-value pairs with the requested character.

Definition at line 66 of file Symbol.cpp.

equals()

bool gtsam::Symbol::equals	(	const Symbol &	expected,
		double	tol = 0.0
	)		const

Check equality.

Definition at line 54 of file Symbol.cpp.

index()

std::uint64_t gtsam::Symbol::index ( ) const

inline

Retrieve key index

Definition at line 80 of file inference/Symbol.h.

key()

Key gtsam::Symbol::key

(

)

const

return Key (integer) representation

Definition at line 40 of file Symbol.cpp.

operator Key()

gtsam::Symbol::operator Key ( ) const

inline

Cast to integer

Definition at line 66 of file inference/Symbol.h.

operator std::string()

gtsam::Symbol::operator std::string

(

)

const

Create a string from the key

Definition at line 58 of file Symbol.cpp.

operator!=() [1/2]

bool gtsam::Symbol::operator!= ( const Symbol &  comp ) const

inline

Comparison for use in maps

Definition at line 106 of file inference/Symbol.h.

operator!=() [2/2]

bool gtsam::Symbol::operator!= ( Key  comp ) const

inline

Comparison for use in maps

Definition at line 111 of file inference/Symbol.h.

operator<()

bool gtsam::Symbol::operator< ( const Symbol &  comp ) const

inline

Comparison for use in maps

Definition at line 91 of file inference/Symbol.h.

operator==() [1/2]

bool gtsam::Symbol::operator== ( const Symbol &  comp ) const

inline

Comparison for use in maps

Definition at line 96 of file inference/Symbol.h.

operator==() [2/2]

bool gtsam::Symbol::operator== ( Key  comp ) const

inline

Comparison for use in maps

Definition at line 101 of file inference/Symbol.h.

print()

void gtsam::Symbol::print

(

const std::string &

s = ""

)

const

Print.

Definition at line 50 of file Symbol.cpp.

string()

std::string gtsam::Symbol::string ( ) const

inline

Return string representation of the key.

Definition at line 88 of file inference/Symbol.h.

Friends And Related Function Documentation

operator<<

GTSAM_EXPORT friend std::ostream& operator<< ( std::ostream &  os, const Symbol &  symbol  )

friend

Output stream operator that can be used with key_formatter (see Key.h).

Definition at line 73 of file Symbol.cpp.

Member Data Documentation

c_

unsigned char gtsam::Symbol::c_

protected

Definition at line 39 of file inference/Symbol.h.

j_

std::uint64_t gtsam::Symbol::j_

protected

Definition at line 40 of file inference/Symbol.h.

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

• inference/Symbol.h
• Symbol.cpp