CDPL.Math.SparseDVector Class Reference

Unbounded sparse vector holding floating point values of type double. More...

Inheritance diagram for CDPL.Math.SparseDVector:

Public Member Functions
None	__init__ ()
	Constructs an empty sparse vector (size zero, no stored entries).
None	__init__ (SparseDVector v)
	Move-constructs from v (v is left in a valid empty state). More...
None	__init__ (int n)
	Constructs a sparse vector of size n with no stored entries (every position reads as the default value). More...
None	__init__ (ConstFVectorExpression e)
	Initializes the SparseDVector instance. More...
None	__init__ (ConstDVectorExpression e)
	Initializes the SparseDVector instance. More...
None	__init__ (ConstLVectorExpression e)
	Initializes the SparseDVector instance. More...
None	__init__ (ConstULVectorExpression e)
	Initializes the SparseDVector instance. More...
None	__init__ (object a)
	Initializes the SparseDVector instance. More...
None	resize (int n)
	Resizes the logical element count to n, dropping any stored entries at indices beyond n. More...
None	clear ()
	Removes all explicitly stored entries (the logical size remains unchanged).
int	getNumElements ()
	Returns the number of explicitly stored (non-default) entries. More...
int	getObjectID ()
	Returns the numeric identifier (ID) of the wrapped C++ class instance. More...
SparseDVector	assign (ConstFVectorExpression e)
	Resizes this vector to match e and assigns the elements of e without intermediate temporary. More...
SparseDVector	assign (ConstDVectorExpression e)
	Resizes this vector to match e and assigns the elements of e without intermediate temporary. More...
SparseDVector	assign (ConstLVectorExpression e)
	Resizes this vector to match e and assigns the elements of e without intermediate temporary. More...
SparseDVector	assign (ConstULVectorExpression e)
	Resizes this vector to match e and assigns the elements of e without intermediate temporary. More...
SparseDVector	assign (SparseDVector v)
	Move-assigns the contents of v to this sparse vector. More...
None	assign (object a)
	Replaces the current state of self with a copy of the state of the object instance a. More...
bool	isEmpty ()
	Tells whether the vector's logical size is zero. More...
int	getSize ()
	Returns the logical element count. More...
float	getElement (int i)
object	toArray ()
None	swap (SparseDVector v)
	Swaps the contents of this sparse vector with those of v. More...
None	setElement (int i, float v)
bool	__eq__ (SparseDVector v)
	Returns the result of the comparison operation self == v. More...
bool	__eq__ (ConstDVectorExpression e)
	Returns the result of the comparison operation self == e. More...
bool	__ne__ (SparseDVector v)
	Returns the result of the comparison operation self != v. More...
bool	__ne__ (ConstDVectorExpression e)
	Returns the result of the comparison operation self != e. More...
float	__call__ (int i)
	Returns a reference to the element at index i. More...
float	__getitem__ (int i)
int	__len__ ()
str	__str__ ()
	Returns a string representation of the SparseDVector instance. More...
SparseDVector	__pos__ ()
ConstDVectorExpression	__neg__ ()
ConstDVectorExpression	__add__ (ConstDVectorExpression e)
	Returns the result of the addition operation self + e. More...
ConstDVectorExpression	__sub__ (ConstDVectorExpression e)
	Returns the result of the subtraction operation self - e. More...
ConstDVectorExpression	__mul__ (float t)
	Returns the result of the multiplication operation self * t. More...
ConstDVectorExpression	__mul__ (ConstDMatrixExpression e)
	Returns the result of the multiplication operation self * e. More...
ConstDVectorExpression	__div__ (float t)
	Returns the result of the division operation self // t. More...
ConstDVectorExpression	__truediv__ (float t)
	Returns the result of the true division operation self / t. More...
ConstDVectorExpression	__rmul__ (float t)
	Returns the result of the multiplication operation t * self. More...
None	__setitem__ (int i, float v)
SparseDVector	__iadd__ (SparseDVector v)
	Performs the in-place addition operation self += v. More...
SparseDVector	__iadd__ (ConstDVectorExpression e)
	Performs the in-place addition operation self += e. More...
SparseDVector	__isub__ (SparseDVector v)
	Performs the in-place subtraction operation self -= v. More...
SparseDVector	__isub__ (ConstDVectorExpression e)
	Performs the in-place subtraction operation self -= e. More...
SparseDVector	__imul__ (float t)
	Performs the in-place multiplication operation self *= t. More...
SparseDVector	__idiv__ (float t)
	Performs the in-place division operation self /= t. More...
SparseDVector	__itruediv__ (float t)

Properties
	objectID = property(getObjectID)
	size = property(getSize)
	numElements = property(getNumElements)

Detailed Description

Unbounded sparse vector holding floating point values of type double.

Constructor & Destructor Documentation

__init__() [1/7]

None CDPL.Math.SparseDVector.__init__

(

SparseDVector

v

)

Move-constructs from v (v is left in a valid empty state).

Parameters

v	The sparse vector to move from.

__init__() [2/7]

None CDPL.Math.SparseDVector.__init__

(

int

n

)

Constructs a sparse vector of size n with no stored entries (every position reads as the default value).

Parameters

n	The logical element count.

__init__() [3/7]

None CDPL.Math.SparseDVector.__init__

(

ConstFVectorExpression

e

)

Initializes the SparseDVector instance.

Parameters

e

__init__() [4/7]

None CDPL.Math.SparseDVector.__init__

(

ConstDVectorExpression

e

)

Initializes the SparseDVector instance.

Parameters

e

__init__() [5/7]

None CDPL.Math.SparseDVector.__init__

(

ConstLVectorExpression

e

)

Initializes the SparseDVector instance.

Parameters

e

__init__() [6/7]

None CDPL.Math.SparseDVector.__init__

(

ConstULVectorExpression

e

)

Initializes the SparseDVector instance.

Parameters

e

__init__() [7/7]

None CDPL.Math.SparseDVector.__init__

(

object

a

)

Initializes the SparseDVector instance.

Parameters

a

Member Function Documentation

resize()

None CDPL.Math.SparseDVector.resize

(

int

n

)

Resizes the logical element count to n, dropping any stored entries at indices beyond n.

Parameters

n	The new logical element count.

getNumElements()

int CDPL.Math.SparseDVector.getNumElements

(

)

Returns the number of explicitly stored (non-default) entries.

Returns

The number of stored entries.

getObjectID()

int CDPL.Math.SparseDVector.getObjectID

(

)

Returns the numeric identifier (ID) of the wrapped C++ class instance.

Different Python SparseDVector instances may reference the same underlying C++ class instance. The commonly used Python expression a is not b thus cannot tell reliably whether the two SparseDVector instances a and b reference different C++ objects. The numeric identifier returned by this method allows to correctly implement such an identity test via the simple expression a.getObjectID() != b.getObjectID().

Returns

The numeric ID of the internally referenced C++ class instance.

assign() [1/6]

SparseDVector CDPL.Math.SparseDVector.assign

(

ConstFVectorExpression

e

)

Resizes this vector to match e and assigns the elements of e without intermediate temporary.

Parameters

e	The source vector expression.

Returns

self

assign() [2/6]

SparseDVector CDPL.Math.SparseDVector.assign

(

ConstDVectorExpression

e

)

Resizes this vector to match e and assigns the elements of e without intermediate temporary.

Parameters

e	The source vector expression.

Returns

self

assign() [3/6]

SparseDVector CDPL.Math.SparseDVector.assign

(

ConstLVectorExpression

e

)

Resizes this vector to match e and assigns the elements of e without intermediate temporary.

Parameters

e	The source vector expression.

Returns

self

assign() [4/6]

SparseDVector CDPL.Math.SparseDVector.assign

(

ConstULVectorExpression

e

)

Resizes this vector to match e and assigns the elements of e without intermediate temporary.

Parameters

e	The source vector expression.

Returns

self

assign() [5/6]

SparseDVector CDPL.Math.SparseDVector.assign

(

SparseDVector

v

)

Move-assigns the contents of v to this sparse vector.

Parameters

v	The source sparse vector (left in a valid but unspecified state).

Returns

self

assign() [6/6]

None CDPL.Math.SparseDVector.assign

(

object

a

)

Replaces the current state of self with a copy of the state of the object instance a.

Parameters

a	The object instance to copy.

Returns

self

isEmpty()

bool CDPL.Math.SparseDVector.isEmpty

(

)

Tells whether the vector's logical size is zero.

Returns

True if the logical size is zero, and False otherwise.

getSize()

int CDPL.Math.SparseDVector.getSize

(

)

Returns the logical element count.

Returns

The number of elements.

getElement()

float CDPL.Math.SparseDVector.getElement

(

int

i

)

Parameters

i

Returns

toArray()

object CDPL.Math.SparseDVector.toArray

(

)

Returns

swap()

None CDPL.Math.SparseDVector.swap

(

SparseDVector

v

)

Swaps the contents of this sparse vector with those of v.

Parameters

v	The sparse vector to swap with.

setElement()

None CDPL.Math.SparseDVector.setElement	(	int	i,
		float	v
	)

Parameters

i
v

__eq__() [1/2]

bool CDPL.Math.SparseDVector.__eq__

(

SparseDVector

v

)

Returns the result of the comparison operation self == v.

Parameters

v	The SparseDVector instance to be compared with.

Returns

The result of the comparison operation.

__eq__() [2/2]

bool CDPL.Math.SparseDVector.__eq__

(

ConstDVectorExpression

e

)

Returns the result of the comparison operation self == e.

Parameters

e	The ConstDVectorExpression instance to be compared with.

Returns

The result of the comparison operation.

__ne__() [1/2]

bool CDPL.Math.SparseDVector.__ne__

(

SparseDVector

v

)

Returns the result of the comparison operation self != v.

Parameters

v	The SparseDVector instance to be compared with.

Returns

The result of the comparison operation.

__ne__() [2/2]

bool CDPL.Math.SparseDVector.__ne__

(

ConstDVectorExpression

e

)

Returns the result of the comparison operation self != e.

Parameters

e	The ConstDVectorExpression instance to be compared with.

Returns

The result of the comparison operation.

__call__()

float CDPL.Math.SparseDVector.__call__

(

int

i

)

Returns a reference to the element at index i.

Parameters

i	The zero-based element index.

Returns

A reference to the stored value, or to the zero element if no entry exists at i.

Exceptions

Base.IndexError

if i is out of range.

__getitem__()

float CDPL.Math.SparseDVector.__getitem__

(

int

i

)

Parameters

i

Returns

__len__()

int CDPL.Math.SparseDVector.__len__

(

)

Returns

__str__()

str CDPL.Math.SparseDVector.__str__

(

)

Returns a string representation of the SparseDVector instance.

Returns

The generated string representation.

__pos__()

SparseDVector CDPL.Math.SparseDVector.__pos__

(

)

Returns

__neg__()

ConstDVectorExpression CDPL.Math.SparseDVector.__neg__

(

)

Returns

__add__()

ConstDVectorExpression CDPL.Math.SparseDVector.__add__

(

ConstDVectorExpression

e

)

Returns the result of the addition operation self + e.

Parameters

e	Specifies the second addend.

Returns

A ConstDVectorExpression instance holding the result of the addition.

__sub__()

ConstDVectorExpression CDPL.Math.SparseDVector.__sub__

(

ConstDVectorExpression

e

)

Returns the result of the subtraction operation self - e.

Parameters

e	Specifies the subtrahend.

Returns

A SparseDVector instance holding the result of the subtraction.

__mul__() [1/2]

ConstDVectorExpression CDPL.Math.SparseDVector.__mul__

(

float

t

)

Returns the result of the multiplication operation self * t.

Parameters

t	Specifies the multiplier.

Returns

A ConstDVectorExpression instance holding the result of the multiplication.

__mul__() [2/2]

ConstDVectorExpression CDPL.Math.SparseDVector.__mul__

(

ConstDMatrixExpression

e

)

Returns the result of the multiplication operation self * e.

Parameters

e	Specifies the multiplier.

Returns

A ConstDVectorExpression instance holding the result of the multiplication.

__div__()

ConstDVectorExpression CDPL.Math.SparseDVector.__div__

(

float

t

)

Returns the result of the division operation self // t.

Parameters

t	Specifies the divisor.

Returns

A ConstDVectorExpression instance holding the result of the division.

__truediv__()

ConstDVectorExpression CDPL.Math.SparseDVector.__truediv__

(

float

t

)

Returns the result of the true division operation self / t.

Parameters

t	Specifies the divisor.

Returns

A ConstDVectorExpression instance holding the result of the division.

__rmul__()

ConstDVectorExpression CDPL.Math.SparseDVector.__rmul__

(

float

t

)

Returns the result of the multiplication operation t * self.

Parameters

t	Specifies the multiplicand.

Returns

A ConstDVectorExpression instance holding the result of the multiplication.

__setitem__()

None CDPL.Math.SparseDVector.__setitem__	(	int	i,
		float	v
	)

Parameters

i
v

__iadd__() [1/2]

SparseDVector CDPL.Math.SparseDVector.__iadd__

(

SparseDVector

v

)

Performs the in-place addition operation self += v.

Parameters

v	Specifies the second addend.

Returns

The updated SparseDVector instance self.

__iadd__() [2/2]

SparseDVector CDPL.Math.SparseDVector.__iadd__

(

ConstDVectorExpression

e

)

Performs the in-place addition operation self += e.

Parameters

e	Specifies the second addend.

Returns

The updated SparseDVector instance self.

__isub__() [1/2]

SparseDVector CDPL.Math.SparseDVector.__isub__

(

SparseDVector

v

)

Performs the in-place subtraction operation self -= v.

Parameters

v	Specifies the subtrahend.

Returns

The updated SparseDVector instance self.

__isub__() [2/2]

SparseDVector CDPL.Math.SparseDVector.__isub__

(

ConstDVectorExpression

e

)

Performs the in-place subtraction operation self -= e.

Parameters

e	Specifies the subtrahend.

Returns

The updated SparseDVector instance self.

__imul__()

SparseDVector CDPL.Math.SparseDVector.__imul__

(

float

t

)

Performs the in-place multiplication operation self *= t.

Parameters

t	Specifies the multiplier.

Returns

The updated SparseDVector instance self.

__idiv__()

SparseDVector CDPL.Math.SparseDVector.__idiv__

(

float

t

)

Performs the in-place division operation self /= t.

Parameters

t	Specifies the divisor.

Returns

The updated SparseDVector instance self.

__itruediv__()

SparseDVector CDPL.Math.SparseDVector.__itruediv__

(

float

t

)

Parameters

t

Returns