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Blitz Support : |
From: Inge.Viken_at_[hidden]
Date: 2005-03-01 11:33:02
Hi all,
I would have thought that the following code should have
compiled (I'm using Visual Studio.Net 2003, Blitz++ 0.8):
#include <iostream>
#include "blitz/array.h"
int main(int argc, char *argv[])
{
blitz::Array<double, 1> a(3), b(2);
a = 1, 2, 3;
// Compiles OK:
b = a(blitz::tensor::i);
// Compiles OK:
b = a(blitz::Range(1, 2));
// Should do the same as the above line,
// shouldn't it?
// Does not compile:
b = a(blitz::tensor::i + 1);
std::cout << a;
std::cout << b;
exit(0);
}
The compilation error message is included at the bottom of this mail.
Presumably it means that 'blitz::tensor::i + 1' will
evaluate to a BzBinaryExprResult<...>::T_result,
for which there is no Array::operator() (based on
interpreting the message and quickly checking the Blitz++ implementation).
Am i doing something wrong, or is the above code simply not supported?
Best regards
Inge Viken (novice Blitz++ user)
******************* Error message **************************
c:\usr\tmp\emsea\bugdemo\bugdemo.cpp(18) : error C2664:
'blitz::Array<P_numtype,N_rank>::T_array
blitz::Array<P_numtype,N_rank>::operator ()(blitz::Range) const' : cannot
convert parameter 1 from 'blitz::BzBinaryExprResult<OP,O1,O2>::T_result' to
'blitz::Range'
with
[
P_numtype=double,
N_rank=1
]
and
[
OP=blitz::Add,
O1=blitz::IndexPlaceholder<0>,
O2=int
]
No constructor could take the source type, or constructor overload
resolution was ambiguous
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