In Independent routines§

See primary documentation in context for sub emit

sub emit(\value --> Nil)

If used outside any supply or react block, throws an exception emit without supply or react. Within a Supply block, it will add a message to the stream.

my $supply = supply {
  for 1 .. 10 {
      emit($_);
  }
}
$supply.tap( -> $v { say "First : $v" });

See also the page for emit methods.

In Supplier§

See primary documentation in context for method emit

method emit(Supplier:D: Mu \value)

Sends the given value to all of the taps on all of the supplies created by Supply on this Supplier.

In Mu§

See primary documentation in context for method emit

method emit()

Emits the invocant into the enclosing supply or react block.

react { whenever supply { .emit for "foo", 42, .5 } {
    say "received {.^name} ($_)";
}}
 
# OUTPUT: 
# received Str (foo) 
# received Int (42) 
# received Rat (0.5)