Hi Monks,

I wonder if anyone could explain to me what is going on here...

I am looking at a module (POE::Kernel)which has the following lines of code in it :

sub MODE_RD () { 0 }  # read
sub MODE_WR () { 1 }  # write
sub MODE_EX () { 2 }  # exception/expedite

These look to me (possibly in my igorance), to be used for returning a number of constant values. The thing I don't understand, is why the empty brackets ? i.e. why aren't they written as :

sub MODE_RD { 0 }  # read
sub MODE_WR { 1 }  # write
sub MODE_EX { 2 }  # exception/expedite

There's obviously something going on here that I haven't come across before, so any care to point me in the right direction ?

Thanks very much !

Nigel.

In reply to What are the brackets in this for ? by nbowden

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