So tack a .Bool at the end.
You are coercing a bool to a bool by doing so and hopefully the optimizer
is smart enough for people who like to be redundant.
;)
On Sun, May 17, 2020 at 6:10 PM ToddAndMargo via perl6-users <
perl6-us...@perl.org> wrote:
> On 2020-05-17 14:43, ToddAndMargo via perl6-users wrote:
> > Although
> >
> > "say 'yes' if 'h:/'.IO.d"
> >
> > is obscure to me and
> >
> > "say 'h:/'.IO.d.Bool"
> >
> > is very easy for me to understand.
>
>
> Hi Peter,
>
> I think it would help if you knew how my
> mind worked.
>
> `if` to me is a Boolean function. If this
> expressions is true, do this, if not, do
> something else.
>
> This is what happens to me when I see expressions
> like
>
> "say 'yes' if 'h:/'.IO.d"
>
> if the expression (h:/.IO.d) is true, then
> say the result of the expression test, not the
> result from the expression. I have to figure
> out what the results from the expression are
> and why it is passing or failing the test.
>
> Two steps in my mind. Not that I can't figure
> things like this out, I just don't like the effort,
> when it can be avoided. The way I look at it, the
> time it takes me to write five extra letters (.Bool)
> will save me ten times that amount of time trying to
> figure out what I did 5 days or 5 years from now.
> Dr. Demming (Quality circles, Kaisen, etc.) makes
> a very strong point of this
>
> And `if` can actually be very helpful at times:
> if $x ~~ s/ "abc" /def/ {...;}
> will tell you if the regex actually found "abc".
> This I adore because I know is a test. Not
> in the least bit obscure.
>
> .d is suppose to return a Boolen, but does not.
> Some functions will convert the junk for you on
> the fly. Raku is very friendly this way. Five extra
> letters and I do not have to wonder who does what
> to whom.
>
> Yes, I am a bit weird.
>
> Thank you for all the wonderful explanations! Very
> much appreciated.
>
> -T
>
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