isYearStart

Syntax

isYearStart(X)

Arguments

X is a scalar/vector of type DATE, DATEHOUR, DATETIME, TIMESTAMP or NANOTIMESTAMP.

Details

Determine if each element in X is the first day of a year.

Examples

$ isYearStart(2012.01.01);
true

$ isYearStart([2012.01.01,2012.02.01]);
[true,false]

Related function: isYearEnd