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<div>Logged as a bug; I'd write a patch if I can figure out how to do the C++ template metaprogramming magic.</div>
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<div>I ran into this when I needed to multiply an itk::VectorImage by a scalar constant. Using the MultiplyImageFilter, the SetConstant (and SetConstant1 and SetConstant2) methods only accept InputImage1PixelType as a constant. </div>
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<div>So, because I was deep into abstruse code, my naïve solution was to instantiate an itk::VariableLengthVector as the constant to pass to SetConstant, where each element was the scalar constant.</div>
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<div>This is, upon further reflection, absurd, because A * B for vectors doesn't even make sense in matrix math, and there's no operator for pairwise multiplication of vector elements.</div>
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<div>But what I found out running my program is that itk::VariableLengthVector will instantiate an operator * with boundless recursion.</div>
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<div>There are two problems: not disallowing boundless recursion, and not supporting scalar constants for vector Images in itk::BinaryFunctorImageFilter.</div>
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<div><a href="https://issues.itk.org/jira/browse/SIMPLEITK-498">https://issues.itk.org/jira/browse/SIMPLEITK-498</a></div>
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