Re: Re: (Golf) Let's go bowling

[dragonchild]

in reply to Re: (Golf) Let's go bowling
in thread (Golf) Let's go bowling

I'm still choking on the map {} @_; ... I've got use 5.6.0; as my first line, so I know I'm not running 5.00x. But, if I change the map to:

@b=@_;
map {s#[X/]#10#} @b;
@_=@b;

Then, it works just fine. The error I'm getting is "Cannot modify a read-only variable." What's the about?

------
/me wants to be the brightest bulb in the chandelier!

Vote paco for President!

[abstracts]

Hello

I'm using 5.6.2 and got that same error. I fixed it by doing:

@b=@_;@_=@b; # then preceed as usual

I bet the problem is that you are calling the function as

score(qw/X 6 5 7 9 ...../);

instead of:

@arr = qw/X 4 5 6 .../; score(@arr);

Map is modifying the content of the list (using s#...#10#). Passing a list (constant) to the sub makes @_ elements aliases to the values passed. This is just like saying

"helo" =~ s/l/ll/;

which does not make sense.

Did I make myself clear? Does it make sense?

Aziz,,,

[dragonchild]

Yes, you are correct! Wow, I didn't realize that could be an issue, though it makes perfect sense, once it's put into those terms.

Thanks! :)

------
/me is slowly becoming the brightest bulb in the chandelier! (though others are kW bulbs...)

Vote paco for President!