Raymond Wan wrote:
On 5/8/09, John W. Krahn <jwkr...@shaw.ca> wrote:
[snip]
That is equivalent in C to:
unsigned char decimal_number = 42;
Or another way to write that in Perl is:
my $decimal_number = pack 'C', 42;
Once you have created the appropriate strings using pack() then just
print() them.
I see; thanks for the explanation. I never used Perl for bits before,
so pack/unpack is still new to me. Until now, I just envisioned that
everything happens magically behind the scenes for me. :-)
At this moment, I got it to work by not opening a file for binary
output. Instead, I just print ()
to STDOUT. It seems specifying whether the output file is binary or
now doesn't matter? I thought it would...
That depends on the operating system you are using. I use Linux so
there is no difference between "binary" and "text", except for those
specific applications that can't handle "binary" data. If you are on a
system like DOS/Windows then reading or writing "binary" data as "text"
will cause problems because line ending translation occurs with "text"
files but not with "binary" files.
John
--
Those people who think they know everything are a great
annoyance to those of us who do. -- Isaac Asimov
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