RWToEnd Class Reference
[Math Collections]

Represents an index that can be used for subscripting vectors, matrices, and arrays from a given element to the end. More...

#include <rw/rwslice.h>

Inheritance diagram for RWToEnd:

List of all members.

Public Member Functions
	RWToEnd (int begin)
	RWToEnd (int begin, int stride)

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Detailed Description

An RWToEnd object is an index which can be used for subscripting vectors, matrices, and arrays from a given element to the end. By subscripting with RWToEnd objects, you create views of selected elements. These new views are vectors, matrices, or arrays in their own right, rather than simply helper classes. This means that a view created with subscripting can be used as an rvalue, an lvalue, or kept as an object for use later.

The class RWToEnd is derived from RWSlice. It can be used to initialize an RWSlice object as follows:

 RWSlice s = RWToEnd(3); 

Synopsis

 #include <rw/math/mathvec.h>
 RWMathVec<double> x(20);
 cout << x(RWToEnd(4));  // output elements 4 to last

Examples

 #include <iostream.h>
 #include <rw/math/genmat.h>
 
 int main()
 {
    RWGenMat<int> A(6,6);
    A = 0;
    RWToEnd I(3);        // indices 3,4,5
    A(I,I) = 1;
    cout << A << endl;
 }

Program output:

 6x6
 [
      0     0     0     0     0     0
      0     0     0     0     0     0
      0     0     0     0     0     0
      0     0     0     1     1     1
      0     0     0     1     1     1
      0     0     0     1     1     1
 ]

See also:

RWRange, RWSlice, RWMathVec::operator()(), RWGenMat::operator()(), RWMathArray::operator()()

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Constructor & Destructor Documentation

RWToEnd::RWToEnd

(

int

begin

)

[inline]

Constructs an object which indexes starting at element begin and ending with the last element.

RWToEnd::RWToEnd	(	int	begin,
		int	stride
	)			[inline]

Constructs an object which indexes starting at element begin and ending with the last element. The parameter stride is the increment between successive selected elements.