Re: [boost] matrix and vector iterators

From: boost (boost_at_[hidden])
Date: 2001-06-08 15:52:17

Salut,

On Thursday 07 June 2001 21:50, you wrote:
> One thing that we need to decide on is the interface for traversing
> vectors and matrices. I see a couple options:
>
> 1. MTL-style iterators
>
>   *i          // return a matrix/vector element
>   i.index()   // return the index of the element pointed to (for vectors)
>   i.row()     // return the row index (for matrices)
>   i.colummn() // return the column indexn (for matrices)
>
> 2. iterator over "matrix elements" or "vector elements"
>   *i         // returns a matrix or vector element object.
>   value(*i)  // return the element value
>   row(*i)    // returns the row index
>   column(*i) // return the column index
>   index(*i)  // return the index (for vectors)
>

SInce I have to dealt with matrices of matrices, I'd prefer
the first one. So I could introduce a super-iterator with
 i.index().index(), which would be consistent with 1).

index( index( *i) ) wouldn't be as good to read.

Best wishes,
Peter