Reinhold May wrote:
>
> This is probably mainly going to Flavio:
>
> I've tried a different approach to solving my problem described
> in earlier posts and this time I have the following issue:
>
> If I do an intersection (whether with iterator->next($span)
> or $spanset->intersection($span) or even
> $spanset->as_list($span)), I get a SpanSet that can have,
> depending on where the intersection span starts and ends, a cut
> first span and a cut last span:
>
> |----| |----| |----| |----| # Source SpanSet
> |----------------| # intersection Span
>
> |--| |----| |--| # Resulting SpanSet
>
> what I actually need is a set of unmodified spans intersected by
> that span:
>
> |----| |----| |----| # Wanted resulting SpanSet
>
> I do understand that this behaviour is wanted by some
> applications but in mine, I can't use the resulting spanset.
>
> One solution to my problem would be to check the first and
> the last Span in my resulting SpanSet for its length and correct
> it when necessary. But I find that solution rather ugly.
Using the not-yet-available grep:
my $new_set = $spanset->set_grep(
sub { $_[0]->intersects( $span ) }
);
- Flavio S. Glock
