Rules / Types, classes & roles / exception

X::Channel::ReceiveOnClosed Reference

Error due to calling receive on a closed channel

What it is #

Routines #

Signatures are reproduced from the documentation, including their declared return types. A routine listed here is part of the type's published interface; whether Raku++ implements it is a separate question, answered by the examples below.

method channel #

method Channel(X::Channel::ReceiveOnClosed:D: --> Channel:D)

Returns Channel:D.

Returns the Channel object on which the receive method was called.

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.

1 no-output · 1 ok

class X::Channel::ReceiveOnClosed {}

Not executed: the documentation states no expected output for this example.

my $s = Channel.new;
$s.close;
$s.receive;     # Cannot receive a message on a closed channel
CATCH { default { put .^name, ': ', .Str } };
# OUTPUT: «X::Channel::ReceiveOnClosed: Cannot receive a message on a closed channel␤»
Output
X::Channel::ReceiveOnClosed: Cannot receive a message on a closed channel

Documentation, Rakudo and Raku++ all agree.