On Fri, Sep 29, 2017 at 1:06 AM, Brandon Allbery <allber...@gmail.com>
wrote:
> On Fri, Sep 29, 2017 at 12:59 AM, ToddAndMargo <toddandma...@zoho.com>
> wrote:
>
>> On 09/28/2017 09:53 PM, ToddAndMargo wrote:
>>
>>> On 09/28/2017 09:45 PM, Brandon Allbery wrote:
>>>
>>>> IO::Path's .f method. (Or .e to not require it to be a file, etc. as
>>>> usual.)
>>>>
>>>> pyanfar Z$ 6 '".profile".IO.f.say'
>>>> True
>>>>
>>>
>>> How do I get this to give me a "False" instead of crashing
>>> and wagging the finger at me?
>>>
>>> $ perl6 -e 'say "eraseme.txt".IO.f;'
>>> True
>>>
>>> $ perl6 -e 'say "erasxeme.txt".IO.f;'
>>> Failed to find '/home/linuxutil/erasxeme.txt' while trying to do '.f'
>>> in block <unit> at -e line 1
>>>
>>
>> method f
>>
>> Defined as:
>>
>> method f(--> Bool:D)
>>
>> Returns True if the invocant is a path that exists and is
>> a file. The method will fail with X::IO::DoesNotExist if
>> the path points to a non-existent filesystem entity.
>>
>> maybe it is suppose to crash?
>
>
> This sounds broken, actually; I understand that a Failure treated as a
> Bool prevented it from throwing, so it should have simply returned False.
>
> Checking it for .defined *does* prevent throwing. Still seems like a bug.
>
Apparently not a bug, just unfortunate. You have to explicitly coerce it to
Bool to keep it from throwing.
pyanfar Z$ 6 '".profileX".IO.f.Bool.say'
False
(And, Norman? It produces a Failure, not a hard exception. You can
introspect Failures to keep them from getting thrown.)
--
brandon s allbery kf8nh sine nomine associates
allber...@gmail.com ballb...@sinenomine.net
unix, openafs, kerberos, infrastructure, xmonad http://sinenomine.net
