#=infix
$a < $b # $a.infix:«<»( $b );
$a <=> $b # $a.infix:«<=>»( $b );
@a ¥ @b # @a.infix:<¥>( @b );
#=circumfix
$a{'foo'} # $a.circumfix:«{ }»('foo');
#=postcircumfix
$a.{'foo'} # $a.postcircumfix:«{ }»('foo');
#=infix
$a < $b # $a.infix:«<»( $b );
$a <=> $b # $a.infix:«<=>»( $b );
@a ¥ @b # @a.infix:<¥>( @b );
#=circumfix
$a{'foo'} # $a.circumfix:«{ }»('foo');
#=postcircumfix
$a.{'foo'} # $a.postcircumfix:«{ }»('foo');