Granted, but is this a common occurrence? Also, the workaround is easy.
On the other hand, how common are the errors which would be caught by adding
the test?
John
John Souvestre - New Orleans LA
-----Original Message-----
From: golang-nuts@googlegroups.com [mailto:golang-nuts@googlegroups.com] On
Behalf Of Ian Lance Taylor
Sent: 2017 March 29, Wed 18:21
To: Manlio Perillo
Cc: golang-nuts
Subject: Re: [go-nuts] time: error prone implementation of Time.Format
On Wed, Mar 29, 2017 at 2:29 PM, Manlio Perillo
<manlio.peri...@gmail.com> wrote:
> Il giorno mercoled� 29 marzo 2017 23:18:09 UTC+2, Ian Lance Taylor ha
> scritto:
>>
>> On Wed, Mar 29, 2017 at 2:03 PM, Manlio Perillo
>> <manlio....@gmail.com> wrote:
>> > In a program I have a function that formats the time in Italian date
>> > format:
>> > dd/mm/yyyy, but, due to an oversight, I wrote the layout string as
>> > "02/02/2006", instead of "02/01/2006".
>> > This caused all the dates to be incorrectly formatted.
>> >
>> > IMHO, this is a nasty behavior. The layout is clearly incorrect and the
>> > implementation should report an error, instead of returning an
>> > incorrectly
>> > formatted time.
>>
>> I think it would be difficult to define "clearly incorrect" in a way
>> that does not introduce any false negatives while remaining useful.
>
>
> In my case I specified stdZeroDay twice.
>
> The AppendFormat function can define some additional boolean variables:
> hasYear, hasMonth, hasDay, ...
> and return an error if a variable is set to true more than one time.
But it's not clearly incorrect to write
"2006-01-02 or Jan 02, 2006"
Ian
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