I'm seeing a strange error. I started trying out Marc's original code,
then tried to adapt some Perl5-type solutions from SO to see how they
performed when re-written as Perl6. One thing I wanted to explicitly
test was how restricting to an "Int" type affected performance.
However, I found a surprising result: a sequence of one-million Ints
throws an error, but a sequence of 999,999 Ints does not:
> mbook:~ homedir$ seq 1000000 | time perl6 -e 'say [+] lines'
> 500000500000
> 4.81 real 4.86 user 0.20 sys
> mbook:~ homedir$ seq 1000000 | time perl6 -ne 'my $y += $_; END { print $y; }'
> 500000500000 4.88 real 5.06 user 0.19 sys
> mbook:~ homedir$ seq 1000000 | time perl6 -ne 'my Int $y += $_; END { print
> $y; }'
> Type check failed in assignment to $y; expected Int but got Num
> (500000500000e0)
> in block <unit> at -e line 1
> 499999500000 4.77 real 4.97 user 0.19 sys
> mbook:~ homedir$ seq 999999 | time perl6 -ne 'my Int $y += $_; END { print
> $y; }'
> 499999500000 4.86 real 5.05 user 0.19 sys
> mbook:~ homedir$ perl6 -v
> This is Rakudo version 2019.07.1 built on MoarVM version 2019.07.1
> implementing Perl 6.d.
> mbook:~ homedir$
Any comments or explanation appreciated,
Best Regards, Bill.
On Tue, Sep 24, 2019 at 1:59 AM Marc Chantreux <[email protected]> wrote:
>
> hello,
>
> > > > > nice ... but when x is ~ 75440 (not always), there is a problem
> > > > What is x here?
> > > sorry. x is the arg of seq (number of lines).
> > That never happens on my laptop
>
> well.. so it's a problem with my station. nevermind :)
>
> thanks again for helping
> marc
