Weird my Syntax

PetaMem has asked for the wisdom of the Perl Monks concerning the following question:

Dear Monks,

inspecting the Cache::Memcached source, I stumbled across the following:

sub stats_reset {
    my Cache::Memcached $self = shift;
[download]

Now the "Cache::Memcached" after the "my" keyword is what puzzles me. The camel book doesn't mention anything like that in the description of my, and so I'm completely missing the semantics of it. What is it? Some kind of data type specification?

Bye
PetaMem All Perl: MT, NLP, NLU

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Re: Weird my Syntax by Joost (Canon) on Aug 01, 2005 at 12:44 UTC
It's a package/class specification that can be used by the fields pragma to provide compile-time checking of properties. See also base By the way, I think it's mentioned in the 3rd edition of the Camel book too. "What should it profit a man, if he should win a flame war, yet lose his cool?"	[reply]
Re: Weird my Syntax by derby (Abbot) on Aug 01, 2005 at 12:50 UTC
Not weird ... from perldoc -f my my TYPE EXPR my EXPR : ATTRS my TYPE EXPR : ATTRS A "my" declares the listed variables to be local (lexically) to the enclosing block, file, or "eval". If more than one value is listed, the list must be placed in parentheses. The exact semantics and interface of TYPE and ATTRS are still evolving. TYPE is currently bound to the use of "fields" pragma, and attributes are handled using the "attributes" pragma, or starting from Perl 5.8.0 also via the "Attribute::Handlers" module. See "Private Variables via my()" in perlsub for details, and fields, attributes, and Attribute::Handlers [download] -derby	[reply] [d/l]
Re: Weird my Syntax by castaway (Parson) on Aug 02, 2005 at 08:17 UTC
I guess you missed the discussion of `my Dog spot;` in the Camel, I think it's in the modules chapter. C.	[reply] [d/l]