In Date§

See primary documentation in context for sub infix:<+>

multi sub infix:<+> (Date:DInt:D --> Date:D)
multi sub infix:<+> (Int:DDate:D --> Date:D)

Takes an Int and adds that many days to the given Date object.

say Date.new('2015-12-25'+ 332# OUTPUT: «2016-11-21␤» 
say 1 + Date.new('2015-12-25');   # OUTPUT: «2015-12-26␤»

In Range§

See primary documentation in context for sub infix:<+>

multi sub infix:<+>(Range:D \rReal:D \v)
multi sub infix:<+>(Real:D \vRange:D \r)

Takes an Real and adds that number to both boundaries of the Range object. Be careful with the use of parenthesis.

say (1..2+ 2# OUTPUT: «3..4␤» 
say 1..2 + 2;   # OUTPUT: «1..4␤»

In DateTime§

See primary documentation in context for sub infix:<+>

multi sub infix:<+> (DateTime:DDuration:D --> DateTime:D)
multi sub infix:<+> (Duration:DDateTime:D --> DateTime:D)

Takes a DateTime and increases it by the given Duration, preserving the time zone.

say DateTime.new(:2015year) + Duration.new(31536001.0);
# OUTPUT: «2016-01-01T00:00:00Z␤» 
say Duration.new(42+ DateTime.new(:2015year, :3600timezone);
# OUTPUT: «2015-01-01T00:00:42+01:00␤»