[Pdx-pm] Emulate a file in memory?

Eric Wilhelm ewilhelm at sbcglobal.net
Fri Oct 1 14:37:43 CDT 2004

# The following was supposedly scribed by
# Colin Kuskie
# on Friday 01 October 2004 01:37 pm:

>> I was recently trying to find something like python's StringIO,
>> which lets a string be a filehandle.
>You mean like IO::String?

heh.  Yeah, exactly like that except using the builtin <>, 
seek(HANDLE, $off, $whence), and such-like syntax.

So, this isn't really what I was looking for, but it's manpage did 
clue me in on the fact that perl has native support for what I was 
wanting since 5.8!  A look at my 5.8.3 perldoc -f open has all of the 
fun details.

perl -e '$a = "foo
open(A, "<", \$a) or die;
seek(A, 0,0);
read(A, $b, 7);
print "$b\n";
seek(A, 1,0);
read(A, $b, 2);
print "$b!\n";'

So, you've found my solution (and maybe the guts that implement this 
are magic enough to work with SQLite too.)  If so, that might solve 
Rod's problem as well (provided that he has 5.8 or better.)

"It is a mistake to allow any mechanical object to realize that you 
are in a hurry."
                                        --Ralph's Observation

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