Re: [Blitz-support] Indexing unary expressions with tensors?

[Nicolai S. <nic...@gm...>]

Hi once again,

reading the Blitz++ code, I concluded that using index placeholders as
arguments to '_bz_ArrayExpr::operator()'
simply isn't supported yet:
my errors came from the compiler trying to instantiate the templated
'operator()' versions intended to be used with slices, not with
IndexPlaceholders.

I supplied _bz_ArrayExpr with 'operator()' overloads taking
IndexPlaceholders (see attached diff). Fortunately, this was pretty
straightforward since 'ArrayIndexMapping' has been implemented for
general expressions already, not only 'blitz::Array's.

The attached testcase (test.cc) compiles and runs fine.

Sidenote:
My compiler issued some warnings about operator precedence in
indexexpr.h: + has higher precedence than '?:'. You'll find another diff
addressing this issue attached.

Best,

Nicolai