Il giorno giovedì 30 marzo 2017 01:21:14 UTC+2, Ian Lance Taylor ha scritto: > > On Wed, Mar 29, 2017 at 2:29 PM, Manlio Perillo > <manlio....@gmail.com <javascript:>> wrote: > > Il giorno mercoledì 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" > > I'm probably missing something, but "2006-01-02" is a valid time layout string.
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