X::Proc::Async::BindOrUse Reference

Error due to trying to bind a handle that is also used

What it is #

Examples, run three ways #

Every example below comes from the official documentation, together with the output that documentation asserts. Each was then executed by Rakudo and by Raku++ when this page was built. Where the three agree, one result is shown; where they do not, all three are — because which of them is wrong is exactly the information worth having.

2 no-output

class X::Proc::Async::BindOrUse does X::Proc::Async {}

my $p = Proc::Async.new("ls", :w);
my $h = "ls.out".IO.open(:w);
$p.bind-stdin($h);
# Fails with OUTPUT: «Cannot both bind stdin to a handle and also use :w␤»