Re: processing a file in chunks

CatHandle is the mechanism behind $*ARGFILES. If you want to read several files as it they were one, you can use IO::CatHandle. my $combined-file = IO::CatHandle.new( 'example_000.txt', *.succ ... 'example_010.txt' ); Basically it works similar to the `cat` command-line utility. (Hence its n

Re: What is a LoweredAwayLexical?

The optimizer can lower lexical variables into local variables. When it does so, it keeps track of this so that it can give you this error message. The `given` block and the `when` blocks are optimized away. If you move the first `$a` declaration to inside the `given` block the error goes away.

What is a LoweredAwayLexical?

Yesterday I created a new when clause in an existing working program, which worked fine, but today when I came to exercise another previously working when clause it was broken. The golfed version... my $a = 41; given 6 { when 5 { my $a; } when 6 { say $a + 1; } }

Re: processing a file in chunks

On 10/22/19 3:03 PM, Parrot Raiser wrote: CatHandle? Is that an alias for "tail"? :-)* hehe, that's a nice word change... Well, I've seen it here at https://docs.perl6.org/routine/readchars But there's also IO::Handle What I've understood is that the CatHandle does the same as a readonl

Re: processing a file in chunks

CatHandle? Is that an alias for "tail"? :-)* On 10/22/19, Marcel Timmerman wrote: > On 10/22/19 1:05 PM, Marcel Timmerman wrote: >> On 10/20/19 11:38 PM, Joseph Brenner wrote: >>> I was just thinking about the case of processing a large file in >>> chunks of an arbitrary size (where "lines" or "

Re: processing a file in chunks

On 10/22/19 1:05 PM, Marcel Timmerman wrote: On 10/20/19 11:38 PM, Joseph Brenner 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, b

Re: processing a file in chunks

On 10/20/19 11:38 PM, Joseph Brenner 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... somet

Re: order of execution

Thanks everyone, I wonder, should I file an issue at rakudo's? Marcel Programs are compiled in memory, it just isn't written out to disk. On Mon, Oct 21, 2019 at 3:33 AM Marcel Timmerman > wrote: @yary Thanks for your answer. I've done it too and saw the sa

Re: processing a file in chunks

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