title: How to override ShinobiChart class in Swift
body: <p>I use Shinobi 2.8.2 chart premium library, and I am trying to override <code>ShinobiChart</code> class, but I get 65 errors.</p>
  
  <pre><code>Apple Mach-O Linker Error
     Undefined symbols for architecture x86_64:
      "typeinfo for std::exception", referenced from:
         typeinfo for std::__1::bad_function_call in ShinobiCharts(ShinobiCharts)
      "typeinfo for std::__1::ios_base", referenced from:
         typeinfo for std::__1::basic_ios&lt;char, std::__1::char_traits&lt;char&gt; &gt; in ShinobiCharts(ShinobiCharts)
      "vtable for __cxxabiv1::__class_type_info", referenced from:
         typeinfo for SChartGL::AnimationManager in ShinobiCharts(ShinobiCharts)
         typeinfo for SChartGL::ErrorHandler in ShinobiCharts(ShinobiCharts)
         typeinfo for SChartGL::VertexMath::convertSeries2DToGLVertex3DWithMultipleBaselines(float*,  SChartGL::GLVertex3D*, int, GLColour4f const*, GLColour4f const*, SChartGL::orientation, float)::$_0 in ShinobiCharts(ShinobiCharts)
         typeinfo for SChartGL::VertexMath::convertSeries2DToGLVertex3DWithBaseline(std::__1::vector&lt;SChartGL::Point, std::__1::allocator&lt;SChartGL::Point&gt; &gt;, SChartGL::GLVertex3DWithCurvature*, float, SChartGL::orientation, GLColour4f const&amp;, GLColour4f const&amp;)::$_1 in ShinobiCharts(ShinobiCharts)
         typeinfo for SChartGL::VertexMath::convertSeries2DToGLVertex3DWithInterpolatedGradientFill(float*, SChartGL::GLVertex3D*, int, GLColour4f const&amp;, GLColour4f const&amp;, float)::$_2 in ShinobiCharts(ShinobiCharts)
         typeinfo for std::__1::basic_streambuf&lt;char, std::__1::char_traits&lt;char&gt; &gt; in ShinobiCharts(ShinobiCharts)
         typeinfo for SChartGL::RenderData in ShinobiCharts(ShinobiCharts)
  ...
  </code></pre>
  
  <p>What I did is :</p>
  
  <pre><code>import UIKit
  import ShinobiCharts
  
  
  class BIGraphChartView: ShinobiChart {
  
  }
  </code></pre>
  
  <p>What I did wrong?</p>