[Quantlib-dev] Array vs std::vector + free operators

[DU V. DE V. F. G. P. <fra...@ca...>]

Hi all,

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I have tried to removing the dependency on Array class from the =
optimization framework. One change leading to another it turns out that =
Arrray dependencies could be removed in the whole QL ! The only change I =
had to do was to provide missing operators an independent header file =
and all worked fine. As a result I'm wondering if using plain =
std::vector instead of Arrray wouldn't be more efficient in terms of =
compilation efficiency and flexibility of use. (if one want to use =
linear algebra he has just to include a file defining new operators...). =
I haven't done serious tests but I don't think that it would cause any =
performance loss since std::vector is a sequential container and is =
"swapable" in constant time. On the other hand it would make the array =
implementation more transparent to the user thus much more difficult to =
replace if one want to provide another implementation (but is it likely =
to happen ?)

Any thought ?

Fran=E7ois