Thanks Timo,
A Proc::Async example, after reading the doco. Agree, that't better, even
for the simple case :-)
- David
my $proc = Proc::Async.new('sh', '-c', 'for x in `seq 1 1` ; do echo
"o$x"; echo "e$x" 1>&2; done');
# subscribe to new output from out and err handles:
$proc.stdout.tap(-> $
select() in this context is arguably a workaround for lack of threads,
although it can also be used to simulate threading ("green threads").
On Thu, Jul 27, 2017 at 8:41 PM, David Warring
wrote:
> Perl 5 and C have the select call that lets you determine which of a group
> of file-descriptor are
We have Proc::Async which removes the need for the select call itself
Perl 5 and C have the select call that lets you determine which of a group
of file-descriptor are ready for reading and writing. I thought it might be
useful here.
https://en.wikipedia.org/wiki/Select_(Unix)
I've found a module by Tadzik, https://github.com/tadzik/IO-Select, but
it's looking defu
On Thu, Jul 27, 2017 at 7:49 PM, Norman Gaywood wrote:
> my $input = q:to/EOS/;
> line of text
> another line
> EOS
>
> my $cat = run 'cat', '-n', :in($input.print), :out;
> my $output = $cat.out.get;
> $cat.in.close;
> $cat.out.close;
>
> say "done";
> say $output;
>
> But that is not correct.
You'll want to just pass :in and then use "$cat.in.print($input);
$cat.in.close;"
We just had a thread about this on reddit with zoffix and me weighing in:
https://www.reddit.com/r/perl/comments/6pwqcy/how_do_i_interact_with_a_shell_program_using_perl/
On 07/28/2017 01:49 AM, Norman Gaywood
>From inside a program I'd like to send some input to the stdin of external
program and read back the stdout.
The example in https://docs.perl6.org/language/ipc under proc comes close
to what I want:
my $echo = run 'echo', 'Hello, world', :out;
my $cat = run 'cat', '-n', :in($echo.out), :out;
sa
