On Sunday, 12 January 2014 at 20:16:15 UTC, Nordlöw wrote:
Is there a trait to check whether a type has value or reference
semantics?
I need this in a template struct that adaptively (using static
if) represent histogram bins as either a dense static array or
a sparse associative array.
No, afaik.
However, the question goes deeper than you might have though. You
probably want to distuingish between structs+scalars vs classes.
However, what about ref-arguments? Mutable arrays are struct
values, but have reference semantics. Immutable-value arrays
(e.g. string) have value semantics.
You could use one version as default and define special cases via
some stuff you find in std.traits.
