Purpose
Convert a date, time or datetime into a number.
Synopsis
function getasnumber(d:date):integer
function getasnumber(t:time):integer
function getasnumber(dt:datetime):real
Arguments
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d
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A date object
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t
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A time object
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dt
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A datetime object
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Return value
The numerical representation of the argument.
Further information
A date is converted to an integer Julian Day Number (number of days since
1/1/1970 at midnight). This function returns an integer number of
milliseconds for a time and a real number of seconds for a datetime.
This number represents the number of seconds and milliseconds
(as the fractional part of the number) since 1/1/1970 at midnight.
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