On Oct 22, 2010, at 3:41 PM, Buddy Burden wrote:
Guys,
A more relevant
comparison and valuable discussion would be the difference in
overhead
between MX::Declare and plain old Moose.
Also, am I incorrect in believing that _all_ the overhead of
MX::Declare is in the startup? For instance, using it in a mod_perl
environment (which I am here at $work), I'm going to pay that cost at
Apache startup and nowhere else ... right?
No, that is vanilla Moose which concentrates the cost in startup.
With MooseX::Declare, you will pay in overhead for every method call
in MooseX::Declare in order to get the type checking.
Piers Crawley described a technique at YAPC::NA this year whereby he
would use a combination of MooseX::Declare and (if I recall correctly)
Method::Signatures (or perhaps it was Method::Signatures::Simple) so
that he could get the method arg type checking when he needed it with
MX::Declare, but when speed was needed he could just use
Method::Signatures and get the parameter handling without the
typecheck overhead.
Of course this doesn't affect the Moose generated accessors, only
methods you write using the "method" keyword that MX::Declare
provides. So I guess really the amount of runtime overhead is directly
proportional to how often you use that.
- Stevan
