RWMathVecPick< T > Class Template Reference
[Math Collections]

Allows selected elements to be addressed in a vector, without creating a new view. More...

#include <rw/math/mthvecpk.h>

List of all members.

Public Member Functions
void	operator= (const RWMathVecPick< T > &)
T &	operator() (int i)
T	operator() (int i) const
RWMathVec< T >::size_type	length () const

---

Detailed Description

template<class T>
class RWMathVecPick< T >

The RWMathVecPick class allows selected elements to be addressed. Unlike subscripting or slicing, picking does not create a new view.

Examples

 #include <iostream>
 #include <rw/math/mathvec.h>

 int main()
 {
     // Set up picked elements:
     RWIntVec ipick("[3 4 8]");

     RWMathVec<double> dv(10, 0, 2);     // 0 2 4 6 8 10 12 14 16 18

     RWMathVecPick<double> dvPick = dv.pick(ipick);

     std::cout << dvPick.length() << std::endl;    // 3
     std::cout << dvPick(0)       << std::endl;    // 6
     std::cout << dvPick(2)       << std::endl;    // 16

     return 0;
 }

---

Member Function Documentation

template<class T>

RWMathVec<T>::size_type RWMathVecPick< T >::length

(

)

const [inline]

Return the number of elements in the pick

template<class T >

T RWMathVecPick< T >::operator()

(

int

i

)

const [inline]

Returns the value in the associated RWMathVec stored at the index indicated by the i ^th element of the RWMathVecPick.

template<class T >

T & RWMathVecPick< T >::operator()

(

int

i

)

[inline]

Returns a reference to the value in the associated RWMathVec stored at the index indicated by the i ^th element of the RWMathVecPick.

template<class T>

void RWMathVecPick< T >::operator=

(

const RWMathVecPick< T > &

)

Assignment operator for RWMathVecPick. The picks must have the same dimensions. The expression:

this = v;

implies thisi = vi