[11:50:21] <lizmat> you don.t need the .Bool, .e already returns a Bool
[11:53:07] <ToddAndMargo> sometimes IO.someletter returns True of Fail,
not False. Tacking .Bool on the end, means I don't have to remember which ones
[11:57:23] <ToddAndMargo> True or Fail. Typo
[11:58:21] <lizmat> A Failure is always false
[12:03:02] <ToddAndMargo> A Fail is a lot more than that. here is an
example: >raku -e "say Q[z:\].IO.d;"Failed to find 'Z:\' while trying to do
'.d' in block <unit> at -e line 1
[12:04:16] <ToddAndMargo> I use .bool at the end because I only want back
a yes or no answer. And I certainly don't want it to crash. Always using
.Bool keeps me out of trouble
[12:19:21] <lizmat> say "directory foo exists" if "foo".IO.d
[12:19:49] <lizmat> you don't have to worry about Failure then, which is
the point of Failure to begin with
[12:23:33] <ToddAndMargo> That is `if` converting the
`X::IO::DoesNotExist` clutter into False for me. I never know when that will
happen and when it won't, so tacking .Bool at the end keeps me out of trouble.
I am not a purest here. I do not mind seeing .Bool at the end. It also tells
me I will be seeing a Boolean.
[12:28:42] <ToddAndMargo> bye bye for now. Thank you all for the tips!
> On 17 May 2020, at 12:36, Peter Pentchev <r...@ringlet.net> wrote:
>
> On Sun, May 17, 2020 at 03:01:34AM -0700, ToddAndMargo via perl6-users wrote:
>> On 2020-05-17 02:30, Peter Pentchev wrote:
>>> You said that you would tack Bool at the end in "if" statements, too.
>>
>> Hi Peter,
>>
>> No wonder. I do not remember saying that, but I could
>> have. My `if` statements look like:
>>
>> if not "%Options<Path>".IO.d.Bool {
>> say "Creating %Options<Path>";
>> mkdir( %Options<Path>", 0o777 );
>> }
>>
>> I definitely do not tack .Bool onto the end
>> of my `if` statements.
>
> Uh. That's exactly what you're doing. You do *not* need the .Bool
> there at the end. The "not" makes Raku convert whatever is there
> to a boolean, so the .Bool is implicit. And if you were to check
> the other way, if you had "if $foo.IO.d { ... }", then the "if"
> makes Raku convert whatever is there to a boolean, so the .Bool is
> implicit. You do not need to put the .Bool in an "if" or a "while"
> statement.
>
> G'luck,
> Peter
>
> --
> Peter Pentchev r...@ringlet.net r...@debian.org p...@storpool.com
> PGP key: http://people.FreeBSD.org/~roam/roam.key.asc
> Key fingerprint 2EE7 A7A5 17FC 124C F115 C354 651E EFB0 2527 DF13
