On Monday, 27 January 2014 at 13:18:06 UTC, Meta wrote:
On Monday, 27 January 2014 at 11:15:36 UTC, matovitch wrote:
Hello !
Yesterday, I started a project to implement completly static
Laurent's polynomials (i.e. polynomials formed by z^n and z^-n
monomials).
I thought I could represent these polynomials with an
immutable range of Tuple!(numeric_type, int).
I've tried (and failed) to implement the addition here :
https://github.com/matovitch/StaticLaurent
Is my goal achivable ? How would you do it ?
ps : I am a *total beginner* waiting for any advice(s).
Immutable and ranges do not mix very well. Can you include some
information on what the exact problem is?
I noticed ! ^^
filter try to perform a memcpy :
/usr/include/dmd/phobos/std/conv.d(3993): Error: memcpy cannot be
interpreted at compile time, because it has no available source
code
/usr/include/dmd/phobos/std/range.d(4227): called from
here: emplace(addr, front(this._ranges_field_0))
/usr/include/dmd/phobos/std/algorithm.d(3171): called from
here: this._current.front()
/usr/include/dmd/phobos/std/algorithm.d(1381): called from
here: this._input.front()
/usr/include/dmd/phobos/std/algorithm.d(1381): called from
here: __lambda3(this._input.front())
/usr/include/dmd/phobos/std/algorithm.d(1369): called from
here: (FilterResult!(__lambda3, Result) __ctmp1478 =
FilterResult(Result);
, __ctmp1478).this(rs)
laurent.d(53): called from here:
filter(myCartesianProduct([Tuple(1.00000, 0), Tuple(1.00000, 1)],
[Tuple(2.00000, 0), Tuple(0.5, 1)]))
laurent.d(51): called from here:
map(filter(myCartesianProduct([Tuple(1.00000, 0), Tuple(1.00000,
1)], [Tuple(2.00000, 0), Tuple(0.5, 1)])))
laurent_test.d(19): Error: template instance
laurent_test.main.add!(p1, p2) error instantiating
