Christian Renz wrote:
Now, I might be stupid, but I keep asking myself what you would need a
property for in this example.
Yes. It's important to remember that the shiny new hammer of properties
is not necessarily the appropriate tool to beat on *every* problem. :-)
Damian
It's also far slower. Constructing a 31-element list, junctionizing
it,
This might well be done at compile-time. And/or, lazily. So
the cost of these two steps is likely to be negligible.
then testing against each element vs. 2 numeric comparisons.
Yes. That's a significant cost
my $var = 0;
# or my $var = 0;
# or my int $var = 0;
# or my num $var = 0;
# all 4 cases should print is integer
print is integer if int $var == $var;
This should work as a more generic method to test Integer
*value*, rather than type, which IMHO is more useful (and
more commonly
On Sat, 4 Jan 2003, Murat Ünalan wrote:
print creditcard if $var == CreditCard( 'VISA' );
wich should do a mod10 on $var and then match a regex or something.
I think one could say CreditCard( 'VISA' ) is then the property. And
after
reading further seeing it could be smart matched like:
Murat Ünalan wrote:
print creditcard if $var ~~ CreditCard( 'VISA' );
Brought to a point: Properties could be also smart matched.
Properties *can* be smart-matched:
print creditcard if $var.prop().{CreditCard} ~~ 'VISA';
or:
print creditcard if $var.prop{CreditCard} ~~ 'VISA';
or:
print
Why should you care? Perl 6 isn't going to be that strictly
typed, is it?
Not even optional ?
Murat
On Sun, 5 Jan 2003, Murat Ünalan wrote:
Properties *can* be smart-matched:
print creditcard if $var.prop().{CreditCard} ~~ 'VISA';
or:
print creditcard if $var.prop{CreditCard} ~~ 'VISA';
or:
print creditcard if $var.CreditCard ~~ 'VISA';
I think this is similar to
Now, I might be stupid, but I keep asking myself what you would need a
property for in this example. To me, it totally confuses the
underlying structure. When was the last time you asked an integer to
identify itself as a valid credit card number?
It is _not_ a property of the integer that it is
