Hi Joe,
Just a quick note to say that "Learning Perl 6" by brian d foy has a
section on reading binary files (pp.155-157). Check out the "Buf"
object type, the ":bin" adverb, and the ".read" method. In particular,
".read" takes an argument specifying how many octets you want to read
in.
HTH, Bill.
On Sun, Oct 20, 2019 at 4:08 PM Joseph Brenner <doom...@gmail.com> wrote:
>
> Yes, you can call .comb on a file handle (which I hadn't realized) and
> if you give it an integer as first argument, that treats it as a chunk
> size... So stuff like this seems to work fine:
>
> my $fh = $file.IO.open;
> my $chunk_size = 1000;
> for $fh.comb( $chunk_size ) -> $chunk {
> say $chunk.chars; # 10000
> say "~~~>>>", $chunk, "<<<<~~~";
> }
>
> But I see you tossed in the caveat "Assuming it is a text file": is
> there a problem if it's some other type of file?
>
>
>
>
>
> On 10/20/19, Brad Gilbert <b2gi...@gmail.com> wrote:
> > Assuming it is a text file, it would be `.comb(512)`
> >
> > On Sun, Oct 20, 2019 at 4:39 PM Joseph Brenner <doom...@gmail.com> wrote:
> >
> >> I was just thinking about the case of processing a large file in
> >> chunks of an arbitrary size (where "lines" or "words" don't really
> >> work). I can think of a few approaches that would seem kind-of
> >> rakuish, but don't seem to be built-in anywhere... something like a
> >> variant of "slurp" with an argument to specify how much you want to
> >> slurp at a time, that'll move on to the next chunk the next time it's
> >> invoked...
> >>
> >> Is there anything like that kicking around that I've missed?
> >>
> >
