bes::Collection Namespace Reference

Classes
struct	DeleteArray
struct	DeleteObject
struct	PtrLess

Functions
template<class C , class T >
C::difference_type	findIndex (const C &container, const T &value)

Function Documentation

findIndex()

template<class C , class T >

C::difference_type bes::Collection::findIndex	(	const C &	container,
		const T &	value )

Determines the offset of the first occurrence of a specified value in a container. This is not an STL-ish way to work; the use of std::find() and iterators instead of offsets is strongly preferred, even for vectors.

This function is supplied only as a migration aid for previous users of the Rogue Wave vector classes.

It is valid for any container type C for whose iterators operator- is defined. When a restriction in the STL supplied by RW for Sun is removed in the future (see below), it could be rewritten to work for all containers.

Definition at line 75 of file BesCollectionUtils.h.

                                                    { 
      typename C::const_iterator found 
        = std::find( container.begin(), container.end(), value );
 
      // Were std::distance available, one would write:               FIXME
      //// return std::distance( container.begin(), found );
 
      // Meanwhile, this should only compile for iterators for which it is efficient:
      return found - container.begin();
    }