It's *a* correct way. But redundant in this particular case.
The universal new() would handle the one-argument call exactly the same
as your overloaded new() does. Presumably, however, the one-argument variant
would do something else as well.
Some people will need to call the constructor with
The universal new() would handle the one-argument call exactly the
same as your overloaded new() does.
Is that correct? S12 says...
All classes inherit a default new constructor from Object.
It expects all arguments to be named parameters initializing
attributes of the same name.
...
Carl Franks wrote:
The universal new() would handle the one-argument call exactly the
same as your overloaded new() does.
Is that correct? S12 says...
All classes inherit a default new constructor from Object.
It expects all arguments to be named parameters initializing
attributes of
Carl Franks wrote:
However, if I allowed the default 'new' to handle that case, then the
BUILD submethod has to be aware of that.
I thought it would be cleaner to 'document' the special case with a
seperate constructor, and also not require any special-case logic in the
BUILD submethod.
Is that
Carl Franks wrote:
I have a class that normally takes a list of named arguments.
I also want to be able to handle a single argument.
class Foo {
multi method new (Class $class: Str $date) {
return $class.bless(date = $date);
}
submethod BUILD ($.date, $.time, $.offset) {
#
On Mon, May 30, 2005 at 05:00:26PM +0100, Carl Franks wrote:
: I have a class that normally takes a list of named arguments.
: I also want to be able to handle a single argument.
:
: class Foo {
: multi method new (Class $class: Str $date) {
: return $class.bless(date = $date);
: }
:
:
I have a class that normally takes a list of named arguments.
I also want to be able to handle a single argument.
class Foo {
multi method new (Class $class: Str $date) {
return $class.bless(date = $date);
}
submethod BUILD ($.date, $.time, $.offset) {
# some error checking here
