StuPeas
09-05-2006, 01:28 PM
In all the books I have read it states that "you can do a read INTO THE MIDDLE OF A STRING" using the syntax:
read (FILEHANDLE, $buf, LENGTH, OFFSET);
I wrote a short script to test this and it doesnt appear to work (see below)
open (READFILE, "reading.txt") || die "$!";
#see below for text file "reading.txt".
$written = "This text is already here.";
read (READFILE, $written, 23, 10);
print $written;
The text file is below (stored in same directory as the script!!):
This is the first line
This is the second line
This is the third line
If you could do a read INTO THE MIDDLE OF A STRING (In this case, $written), then I would have expected an output of:
This text This is the first line is already here
Instead, all the text after the ofset position (In our case "is already here") is overwritten giving the output below:
This text This is the first line
So it appears that you cannot do a read INTO the middle of a string, only overwrite the text FROM any position in a string.
Can antbody advise me if I have wrongly interpreted the books, or indeed if the books are wrong (i doubt it though)
read (FILEHANDLE, $buf, LENGTH, OFFSET);
I wrote a short script to test this and it doesnt appear to work (see below)
open (READFILE, "reading.txt") || die "$!";
#see below for text file "reading.txt".
$written = "This text is already here.";
read (READFILE, $written, 23, 10);
print $written;
The text file is below (stored in same directory as the script!!):
This is the first line
This is the second line
This is the third line
If you could do a read INTO THE MIDDLE OF A STRING (In this case, $written), then I would have expected an output of:
This text This is the first line is already here
Instead, all the text after the ofset position (In our case "is already here") is overwritten giving the output below:
This text This is the first line
So it appears that you cannot do a read INTO the middle of a string, only overwrite the text FROM any position in a string.
Can antbody advise me if I have wrongly interpreted the books, or indeed if the books are wrong (i doubt it though)