GLOB/FH/String

[Hendrik GReving]

Hi,

I have an FileHandle $fh; When I do "print $fh" the FileHandle is treated as
a String and it prints the filename. I need to have a scalar string (for a
list) now, how can I "cast" the FH into a String?


greetings Hendrik

 

[Anno Siegel]

Hi,

I have an FileHandle $fh; When I do "print $fh" the FileHandle is treated as
a String and it prints the filename.

The file *name*? That is a strange filehandle indeed.

That it is interpreted as a string is normal. It's just the way Perl
resolves this particular ambiguity. Write "print $fh, $_" for the
other interpretation.

I need to have a scalar string (for a
list) now, how can I "cast" the FH into a String?

....but this is what happened, it was used as a string. To enforce
stringification (on any Perl variable), put it in double quotes: "$fh".

Anno

 

[Hendrik Greving]

The file *name*? That is a strange filehandle indeed.

That it is interpreted as a string is normal. It's just the way Perl
resolves this particular ambiguity. Write "print $fh, $_" for the
other interpretation.


...but this is what happened, it was used as a string. To enforce
stringification (on any Perl variable), put it in double quotes: "$fh".

Anno

Ok I should have tried this. Anyway, what happens when doing ""? Is this
a cast or can a Filehandle return its Filename implicitly?

greetings Hendrik

 

[Anno Siegel]

Ok I should have tried this. Anyway, what happens when doing ""? Is this
a cast or can a Filehandle return its Filename implicitly?

A file can have any number of names, from zero to anything. A filehandle
knows nothing about them. There is no way to go from an open file to
(any of its) name(s) in the file system.

Anno