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Examples/guile/std_vector/example.h

 

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/* File : example.h */

 

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#include <vector>

 

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#include <algorithm>

 

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#include <functional>

 

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#include <numeric>

 

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double average(std::vector<int> v) {

 

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    return std::accumulate(v.begin(),v.end(),0.0)/v.size();

 

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}

 

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std::vector<double> half(const std::vector<double>& v) {

 

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    std::vector<double> w(v);

 

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    for (unsigned int i=0; i<w.size(); i++)

 

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        w[i] /= 2.0;

 

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    return w;

 

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}

 

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void halve_in_place(std::vector<double>& v) {

 

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    // would you believe this is the same as the above?

 

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    std::transform(v.begin(),v.end(),v.begin(),

 

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                   std::bind2nd(std::divides<double>(),2.0));

 

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}

 

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