RA, Thanks for your response. Can you confirm my interpretations based here make sense?. I am basically hoping to improve the documentation, not simply understand it.
I have currently also a draft table that may help, perhaps you could check it? Attached as a Tid Regards Tony 10th September 2018 at 10:29am Name Relative/reference date "days[N]" "!days[N]" Only Yesterday days[-1] days[-1] Yesterday and all days into the future !days[-1]Yesterday and all days into the past Yesterday only days[-1]!days[-1] XXX *Today* days[0] days[0] Today only !days[0] Not today (all other days) Today only days[0] Tomorrow days[+1] days[+1] Tomorrow and All days in the past !days[+1]Tomorrow and all days in the future Tomorrow only days[+1]!days[+1] XXX A past day days[-7] days[-7] 7 days ago and all days in the future !days[-7] 7 days ago and all days in the past A past day only days[-7]!days[-7] XXX A future day days[+7] days[+7] 7 days ahead and all days in the past !days[+7] 7 days ahead and all days in the future A future day only days[+7]!days[+7] XXX Still to come - Older than today - After today - Before today - Later than today Name Relative/reference date "days[N]" "!days[N]" Notes A Range of Dates Today is 0 gives today only and its negation gives Not today (all other dates)Tomorrow is +1 gives Tomorrow and all days before into the past and its negation gives Tomorrow and all days intot the future "Yesterday is -1 On Monday, 10 September 2018 09:49:04 UTC+10, RA wrote: > > 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. 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Days reference_relative dates.tid
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