bes::Collection Namespace Reference


Classes

struct  PtrLess
struct  DeleteObject
struct  DeleteArray

Functions

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


Function Documentation

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.

00075                                                     { 
00076       typename C::const_iterator found 
00077         = std::find( container.begin(), container.end(), value );
00078 
00079       // Were std::distance available, one would write:               FIXME
00081 
00082       // Meanwhile, this should only compile for iterators for which it is efficient:
00083       return found - container.begin();
00084     }


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