Writing documentation on StaticFor.

Documentation/Examples/Algorithms/StaticForExample.cpp

+#include <iostream>
+#include <cstdlib>
+#include <TNL/Containers/StaticVector.h>
+#include <TNL/Algorithms/StaticFor.h>
+
+using namespace TNL;
+using namespace TNL::Containers;
+
+int main( int argc, char* argv[] )
+{
+   /****
+    * Create two static vectors
+    */
+   const int Size( 3 );
+   StaticVector< Size, double > a, b;
+   a = 1.0;
+   b = 2.0;
+   double sum( 0.0 );
+
+   /****
+    * Compute an addition of a vector and a constant number.
+    */
+   auto addition = [&]( int i, const double& c ) { a[ i ] = b[ i ] + c; sum += a[ i ]; };
+   Algorithms::StaticFor< 0, Size >::exec( addition, 3.14 );
+   std::cout << "a = " << a << std::endl;
+   std::cout << "sum = " << sum << std::endl;
+}
+

Documentation/Tutorials/ForLoops/StaticForExample-3.cpp

-for( int i = 0; i < Size; i++ )
-{
-   a[ i ] = b[ i ] + c; sum += a[ i ];
-};
+Algorithms::StaticFor< 0, Size, true >::exec( addition, 3.14 );
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