On Sunday, 26 January 2014 at 23:27:58 UTC, Stanislav Blinov
wrote:
On Sunday, 26 January 2014 at 20:56:29 UTC, Nordlöw wrote:
My idea to make `getBit` work on all types that have value
semantics.
All of them? Arbitrary structs too? floating point types?
Static arrays? Might I ask... why do you need this sort of
thing? :)
For bit-parallel run-length encoding for efficient serialization
of sets of std.datetime:SysTime structures (16 bytes). I'm trying
to differentially pack sets of SysTimes entries more efficiently
because for a given directory containing files many of these
files often share the majority of their bits. Meta-code:
foreach (n; 0..SysTime.sizeof)
RLC all n-bits for all SysTimes
It is more an interesting experiment :)
That's why I need the cast (I think). Is there a traits to
check if a type has value semantics or not?
The closest would be std.traits.hasIndirections.
Does this work recursively on containing types?
Also is there a trait to check if a type supports a specific
operation such as bitwise and `&`? I could always use
`__traits(compiles, ...)` but standardization is good.
No there isn't.
Thx.
