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@Section
@Title { "@Moment" }
@Tag { moment }
@Begin
@PP
The predefined symbol @@Moment
moment.sym @Index { @@Moment symbol }
has the following definition:
@ID @OneRow @Code {
"def @Moment"
" named @Tag {}"
" named @Second {}"
" named @Minute {}"
" named @Hour {}"
" named @Day {}"
" named @Month {}"
" named @Year {}"
" named @Century {}"
" named @WeekDay {}"
" named @YearDay {}"
" named @DaylightSaving {}"
"{}"
}
It may be used like any other symbol. Lout provides an invocation of
@@Moment with tag {@Code now}, whose other parameters are numbers
encoding the current date and time:
@ID @OneRow @Tab
@Fmta { @Col @Code A ! @Col B }
{
@Rowa
A { "@Second" }
B { the current second, usually between 00 and 59 }
@Rowa
A { "@Minute" }
B { the current minute, between 00 and 59 }
@Rowa
A { "@Hour" }
B { the current hour, between 00 and 23 }
@Rowa
A { "@Day" }
B { the current day of the month, between 1 and 31 }
@Rowa
A { "@Month" }
B { the current month, between 1 (January) and 12 (December) }
@Rowa
A { "@Year" }
B { the current year of the century, between 00 and 99 }
@Rowa
A { "@Century" }
B { the current century, e.g. 19 or 20 }
@Rowa
A { "@WeekDay" }
B { the current day of the week, between 1 (Sunday) and 7 (Saturday) }
@Rowa
A { "@YearDay" }
B { the current day of the year, between 0 and 365 }
@Rowa
A { "@DaylightSaving" }
B { an implementation-dependent number that may encode the
daylight saving currently in effect }
}
date @Index { Date, printing of current }
Unix manual entries state that @Code "@Second" can be as high as 61, to
allow for leap seconds. Judicious use of databases can convert these
numbers into useful dates. For example,
@ID @Code {
"@Moment&&now @Open { @Day {@Months&&@Month}, @Century{@Year} }"
}
produces something like
@Moment&&now @Open { @Day {@Months&&@Month}, @Century{@Year} }
given a suitable database of months.
@End @Section
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