What is the result type of transform if the algorithm is given two sequences of different sizes? Thanks, Eric.
"Lemings, Eric B. \(Contr\)" <Eric.Lemings@ngc.com> writes:
What is the result type of transform if the algorithm is given two sequences of different sizes?
I think the docs imply strongly that the result sequence will be the same length as the first sequence: Complexity: Linear. Exactly ... size<s1>::value applications of op / op2 and in::operation ...although the semantics are stated in terms of pair_view, which is never defined in the docs (ahem!) As for the exact type of the result, well, MPL transformation algorithms never tell you that, regardless of the inputs. -- Dave Abrahams Boost Consulting www.boost-consulting.com
David Abrahams writes:
"Lemings, Eric B. \(Contr\)" <Eric.Lemings@ngc.com> writes:
What is the result type of transform if the algorithm is given two sequences of different sizes?
I think the docs imply strongly that the result sequence will be the same length as the first sequence:
That was the intented semantics, but it appears that tests don't cover this case, and things don't quite work as they supposed to. I'll take a look at it.
Complexity:
Linear. Exactly ... size<s1>::value applications of op / op2 and in::operation
...although the semantics are stated in terms of pair_view, which is never defined in the docs (ahem!)
Yes, it's a known issue. -- Aleksey Gurtovoy MetaCommunications Engineering
Aleksey Gurtovoy writes:
David Abrahams writes:
"Lemings, Eric B. \(Contr\)" <Eric.Lemings@ngc.com> writes:
What is the result type of transform if the algorithm is given two sequences of different sizes?
I think the docs imply strongly that the result sequence will be the same length as the first sequence:
That was the intented semantics, but it appears that tests don't cover this case, and things don't quite work as they supposed to. I'll take a look at it.
Forgot to say that I've put it on the library TODO list: http://www.crystalclearsoftware.com/cgi-bin/boost_wiki/wiki.pl?MPL_TODO_List -- Aleksey Gurtovoy MetaCommunications Engineering
participants (3)
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Aleksey Gurtovoy -
David Abrahams -
Lemings, Eric B. (Contr)