Hello there!
Got my TDPL some week ago, being playing with D for a while.
Excited with results I'm porting my personal C++ codebase now.
So far everything was kinda cool - even better (not to mention huge code
savings).
Now I'm messing with metaprograming. Simple task at hand: given
typetuple of types produce typetuple of arrays of corresponding types.
Built in typetuples - great, but here's where some usual (boost
MPL-like) library stuff has gone missing.
First, StaticMap described in phobos docs simply not exists in
typetuple.d (using dmd 2.047), here is my drop-in replacement:
template staticMap(alias F,T...){
static if(T.length > 1){
alias TypeTuple!(F!(T[0]),staticMap!(F,T[1..$])) staticMap;
}else{
alias TypeTuple!(F!(T[0])) staticMap;
}
}
Yes, and also having some simple meta-functors packaged along couldn't
hurt. Something like :
template addArray(T){ alias T[] addArray; }
So the question boils down to: what are you guys using std.typetuple for
metaprograming and what's it's status?
---
Dmitry Olshansky
