+=(_:_:)
Modifies a column slice by adding each optional value in a collection to the corresponding element in the column.
Declaration
static func += <C>(lhs: inout DiscontiguousColumnSlice<WrappedElement>, rhs: C) where WrappedElement : AdditiveArithmetic, C : Collection, C.Element == WrappedElement?Parameters
- lhs:
A column.
- rhs:
A collection that contains elements of the same type as the column’s elements.