Named arguments via struct initialization in functions

[Edwin van Leeuwen via Digitalmars-d]

On Wednesday, 9 March 2016 at 07:30:31 UTC, Edwin van Leeuwen 
wrote:
> I also added a merge function that will return a tuple 
> containing merged named tuples:
>
> Tuple!(double,"x",string,"colour")(-1, 
> "black").merge(Tuple!(double,"x")(0.0))
>
> returns:
> Tuple!(double,"x",string,"colour")(0, "black");

Quick clarification. The merge function is used to merge the 
passed tuple, with the default values needed in the function. 
This way we don't have to worry about missing values.