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<div class="moz-cite-prefix">On 07/14/2014 01:02 PM, Mark Maunder
wrote:<br>
<br>
Hi,<br>
<br>
I think you are confusing two things here. One is to have a
single function vonB<br>
which acts on different types in the same way. In this case the
code needs to depend on the types.<br>
<br>
Note that in your code it is assumed that age is a vector<br>
<br>
inline<br>
typename Growthvectortrait<T>::GrowthvectorT
vonBertalanffy(const T &Linf, const T &K, const T &t0,
const T1 &age)<br>
{<br>
typedef typename Growthvectortrait<T>::GrowthvectorT
vonBT;<br>
<br>
vonBT len;<br>
cout << "HERE" << endl;<br>
<br>
len.allocate(age.indexmin(),age.indexmax());<br>
len.initialize();<br>
<br>
for(int i = len.indexmin(); i <= len.indexmax(); i++ )<br>
{<br>
len(i) = Linf*(1.-mfexp(-K*(age(i)-t0)));<br>
}<br>
return len;<br>
}<br>
<br>
I think you have to specialize for when age is a number like this.<br>
<br>
template <typename T><br>
inline<br>
dvariable vonBertalanffy(const T &Linf, const T &K, const
T &t0, double &age)<br>
{<br>
<br>
dvariable len;<br>
cout << "HERE1" << endl;<br>
len = Linf*(1.-mfexp(-K*(age-t0)));<br>
return len;<br>
}<br>
<br>
The original traits examples were for doing the same thing to the
passed objects on the<br>
generated code level. So I'm not exactly sure what yoiu are
trying to accomplish here.<br>
<br>
I have attached my code which compiles and runs for what its
worth.<br>
<br>
Dave<br>
<br>
</div>
<blockquote
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<div class="WordSection1">
<p class="MsoNormal">Hi,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I am working on using traits for growth
functions. Steve provided me some example code and I have been
trying to extend it. This looks like it uses templates inside
templates and gets confusing. Attached is some example code
and I would appreciate any help on debugging it. I think the
problem is that for the same function parameter types I have
two different return types, so I made two different traits. I
think it is important to get this sorted out because it may be
something we will use often in creating libraries of
functions.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Mark<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The selectivity <span style="color:black">special
issue of the journal Fisheries Research is now published</span><o:p></o:p></p>
<p class="MsoNormal"><a moz-do-not-send="true"
href="http://www.sciencedirect.com/science/journal/01657836/158/supp/C"><span
style="color:blue">http://www.sciencedirect.com/science/journal/01657836/158/supp/C</span></a><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"
style="margin-bottom:6.0pt;background:white"><span
style="color:black">The Stock Synthesis special issue of the
journal Fisheries Research<o:p></o:p></span></p>
<p class="MsoNormal"
style="margin-bottom:6.0pt;background:white"><span
style="color:black"><a moz-do-not-send="true"
href="http://www.sciencedirect.com/science/journal/01657836/142"><span
style="color:blue">http://www.sciencedirect.com/science/journal/01657836/142</span></a><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Mark Maunder <o:p></o:p></p>
<p class="MsoNormal">Head of the Stock Assessment
Program
<o:p></o:p></p>
<p class="MsoNormal"><span lang="ES-PE">Inter-American Tropical
Tuna Commission <o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span
lang="ES-TRAD">8901 La Jolla Shores Dr.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span
lang="ES-TRAD">La Jolla, CA 92037-1508, USA<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="ES-PE"> <o:p></o:p></span></p>
<p class="MsoNormal">Tel: (858) 546-7027<o:p></o:p></p>
<p class="MsoNormal">Fax: (858) 546-7133<o:p></o:p></p>
<p class="MsoNormal"><a moz-do-not-send="true"
href="mailto:mmaunder@iattc.org"><span style="color:blue">mmaunder@iattc.org</span></a><o:p></o:p></p>
<p class="MsoNormal"><a moz-do-not-send="true"
href="http://www.fisheriesstockassessment.com/TikiWiki/tiki-index.php?page=Mark+Maunder"><span
style="color:blue">http://www.fisheriesstockassessment.com/TikiWiki/tiki-index.php?page=Mark+Maunder</span></a><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Visit the Center for the Advancement of
Population Assessment Methodology at<o:p></o:p></p>
<p class="MsoNormal"><a moz-do-not-send="true"
href="http://www.capamresearch.org/"><span
style="color:blue">http://www.capamresearch.org/</span></a><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Visit the AD Model Builder project at<o:p></o:p></p>
<p class="MsoNormal"> <a moz-do-not-send="true"
href="http://admb-project.org/"><span style="color:blue">http://admb-project.org/</span></a><o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">See the following website for information
on fisheries stock assessment
<a moz-do-not-send="true"
href="http://www.fisheriesstockassessment.com/"><span
style="color:blue">http://www.fisheriesstockassessment.com/</span></a><o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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