From: Christian (chth_at_[hidden])
Date: 2001-10-29 20:26:39
Hi,
has anyone ever written / considered to write some utility stuff for the tuples library?
actually i need:
1) find which tuple-element is derrived from a certain baseclass
assert( find_derived< tuple< int, std::ofstream > ,std::ostream >::value == 1)
assert( find_derived< tuple< int, std::ofstream > ,int >::value == 0)
assert( find_derived< tuple< int, std::ofstream > ,float >::value == -1)
note: this one is allready finished.
2) constructing a new tuple (tier?) which any element which is derrived from a certain baseclass removed
assert(
remove_derived<std::ostream>( make_tuple(42, std::cout, 3.14) )
== make_tuple(42, 3.14)
)
.. i can also imagine alot of other usefull stull .. removing by index, resorting, appending etc.
So my questions: has anyone allready done such things and want to share it?
Are there any plans to integrate such into the main boost library?
cya Christian