My understanding, from a long retired uncle (after a 40 year career at the National Institues of Health writing nothing but Fortran), is that Claude writes perfectly idiomatic, performant Fortran. Which I suppose is not a surprise given how it was trained, but I still found amusing to hear.
Have the idioms of Fortran changed much over the decades? Because idiomatic C++ today is unrecognizable to how people had to write for VC++ Win32 until well-until the 2010s.
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