Re: Problem printing return value from a subroutine

[chromatic]

in reply to Problem printing return value from a subroutine

induced() returns a list flattened from an array. my $qw=induced(@{ $subgraphs[$d-1] }); evaluates that return value in scalar context. If you want to return a scalar, you should join the elements of the array. If you want to return a list, you need to capture it as an array or something which provides list context.

[zing]

But the problem chromatic is this :-

component 2 = e d
induced=3
component 1 = c b a
b c a
induced=3

For component 2 (e d),, there shouldn't be any return value,as there is no line in data which has these vertices. Whereas for component 1(c b a), the first line of data file (b c a) should be returned.