Please see this post <https://groups.google.com/d/msg/tiddlywiki/qv02EnGUwU8/kJzZESJFBAAJ> for explanation and examples. The patch mentioned there has been merged so everything should work as described.
On Saturday, September 8, 2018 at 1:48:33 AM UTC-7, TonyM wrote: > > Folks, > > Since the title of this Post may attract people looking for the Days > Operator and Examples (documentation addition) > and since I have not had any reply's so far I have gone ahead and > researched this. I have attached a tiddler I used to understand the days > operator for anyone interested. > > To be honest this days operator may have some advantages in some coding > cases, and it provides the features we need it really confuses the user. *But > I expect that why I got no replies is because almost no one understands it.* > > I will prepare a more refined set of examples and documentation however it > will be quite tricky. Here are some conceptual ideas to keep in mind if you > want to use it yourself. > > *This is my conclusion but needs independent verification.* > > When using the days parameter the number N in days[N] and days[-N] is > always a date relative to today (Negative in the past, and Positive in the > future) and today is always important. > You can specify a field other than modified with days:fieldname[N]. The > meaning of N never changes It is the point around which you are looking for > dates. > > *Let us call the date referenced by the number a "Reference date", and > they are relative to today* > > Now the Positive form of the days operator is "days[n]" and the negative > form "!days[N]" > > First Using Zero for N > If N = 0 days[0] in the positive form means all days in the past and > future for the nominated date field. > If N = 0 !days[0] in the negative form means NO days in the past or future > for the nominated date field. Always no days at all. > > *The Positive or negative forms can be considered as * > > - Positive includes today *The positive form means always include > today in the result* > - Negative does not include today *The negative form means do not > include today in the result* > > *Basically if you have today and a reference date say 7 or -7 days from > now then (regardless of whether the reference date is + or -);* > > - The positive form will give you all days from the reference date, > *including > today *so it will be all dates before the reference date (into the > past) > - The negative form will give you all days from the reference date, *Not > including today* for it will be all dates after the reference date > (into the future) > > *If you want all days in the future of a given date* > *it all depends on when today is* > > For Future reference dates Use the days operator !days[+N] > For Past reference dates Use the days operator days[-N] > > *If you want all days in the past of a given date* > *it all depends on when today is* > > For Future reference dates Use the days operator days[+N] > For Past reference dates Use the days operator !days[-N] > > Remember ! is like Not, and Not including today > > > *Using a range of dates, using the same date field and two days operators* > > *Use the convention of the past date first and future date second * > days[-7]days[+7] > > - Use the positive or negative version of the days operator *but do > NOT Mix them* > *to mix them will either mean one is not necessary or the result is > null* > - The Positive (on both days operators) version will be the dates > *between* the two reference dates. > - The Negative (on both days operators) version will be the dates > *Outside* the two reference dates. > > Regards > Tony > -- You received this message because you are subscribed to the Google Groups "TiddlyWiki" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/tiddlywiki. To view this discussion on the web visit https://groups.google.com/d/msgid/tiddlywiki/4a0acb91-cde9-4967-9585-2c82c89e1140%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
