Re: metamorphosis or alchemy?

On 9/16/18 8:59 PM, Brandon Allbery wrote: Also, going by math calling the "real numbers" misses that math treats integers as a subset of real numbers; there is no hard distinction between them in math. Computers need hard distinctions here because integral, rational, and floating point

Re: metamorphosis or alchemy?

On 9/16/18 9:10 PM, Brandon Allbery wrote: Sort of. A role is a "package" of components available to build classes from. This allows someone to write a sub or method that works for any kind of number by using the role instead of having to write the same thing over and over for every numeric

Re: metamorphosis or alchemy?

On 9/16/18 9:02 PM, ToddAndMargo wrote: On 9/16/18 8:51 PM, Brandon Allbery wrote: You're assuming "Real" means "a float of some kind". It's not; it defines all the operations in common over non-Complex numbers (Int, Rat, Num, etc.). What you are looking for, Perl 6 calls Num.

Re: metamorphosis or alchemy?

Sort of. A role is a "package" of components available to build classes from. This allows someone to write a sub or method that works for any kind of number by using the role instead of having to write the same thing over and over for every numeric class, or every class representing a non-complex

Re: metamorphosis or alchemy?

On 9/16/18 8:51 PM, Brandon Allbery wrote: You're assuming "Real" means "a float of some kind". It's not; it defines all the operations in common over non-Complex numbers (Int, Rat, Num, etc.). What you are looking for, Perl 6 calls Num. https://docs.perl6.org/type.html: Real role

Re: metamorphosis or alchemy?

You're assuming "Real" means "a float of some kind". It's not; it defines all the operations in common over non-Complex numbers (Int, Rat, Num, etc.). What you are looking for, Perl 6 calls Num. On Sun, Sep 16, 2018 at 8:53 PM ToddAndMargo wrote: > Hi All, > > I am confused, again: > > > $ p6

Re: metamorphosis or alchemy?

Actually what I meant was my Real $x = 3; $x = Nil; $x.WHO.say What you must read undoubtedly are this: https://docs.perl6.org/language/containers and this: https://opensource.com/article/18/8/containers-perl-6

Re: metamorphosis or alchemy?

16 вер. 2018 р. о 22:11 Curt Tilmes > написав(ла): It isn't changing anything. You've still got a box ('container') that can only hold something 'Real'. You just happen to have a value in that box that is a 'Rat'. It is perfectly fine to put a Rat value in a Real box,

Re: metamorphosis or alchemy?

Actually, typing 'dd' in the searchbox on docs.perl6.org gives you a long list with dd in 'Reference' section of that list. > > https://docs.perl6.org/routine/dd > 404: Page Not Found > > Search does not work either. > Best regards, Vadim Belman

Re: metamorphosis or alchemy?

On Sun, Sep 16, 2018 at 10:07 PM ToddAndMargo > wrote: On 09/16/2018 06:50 PM, Curt Tilmes wrote: > Note that an object that is a Rat also does Real (see > https://docs.perl6.org/type/Rat#Type_Graph) > > say Rat ~~ Real > > True

Re: metamorphosis or alchemy?

I would add on top of Curt's explanation. Try assigning Nil to $x and then ask for its type. You'll get your Real back! > 16 вер. 2018 р. о 22:11 Curt Tilmes написав(ла): > > It isn't changing anything. > > You've still got a box ('container') that can only hold something 'Real'. > > You

Re: metamorphosis or alchemy?

It isn't changing anything. You've still got a box ('container') that can only hold something 'Real'. You just happen to have a value in that box that is a 'Rat'. It is perfectly fine to put a Rat value in a Real box, because a Rat is also a Real (does the 'Real' role). You can still stick

Re: metamorphosis or alchemy?

On 09/16/2018 06:50 PM, Curt Tilmes wrote: Note that an object that is a Rat also does Real (see https://docs.perl6.org/type/Rat#Type_Graph) say Rat ~~ Real True Your're making a box that takes a Real, then putting a Rat (that also does Real) into that box. It then says "yes, you've got a

Re: metamorphosis or alchemy?

Note that an object that is a Rat also does Real (see https://docs.perl6.org/type/Rat#Type_Graph) say Rat ~~ Real True Your're making a box that takes a Real, then putting a Rat (that also does Real) into that box. It then says "yes, you've got a Rat in there". On Sun, Sep 16, 2018 at 9:35

Re: metamorphosis or alchemy?

On 09/16/2018 05:52 PM, ToddAndMargo wrote: Hi All, I am confused, again: $ p6 'my $x=3; dd $x' Int $x = 3 Makes sense $ p6 'my $x; dd $x' Any $x = Any Makes Sense $ p6 'my Real $x; dd $x' Real $x = Real makes sense $ p6 'my Real $x = 3; dd $x' Int $x = 3 What Integer ?  Did I or

metamorphosis or alchemy?

Hi All, I am confused, again: $ p6 'my $x=3; dd $x' Int $x = 3 Makes sense $ p6 'my $x; dd $x' Any $x = Any Makes Sense $ p6 'my Real $x; dd $x' Real $x = Real makes sense $ p6 'my Real $x = 3; dd $x' Int $x = 3 What Integer ? Did I or did I not just tell it is was a "Real" ?