[mlpack-svn] [MLPACK] #183: Don't use `const char*` anywhere

[MLPACK Trac]

#183: Don't use `const char*` anywhere
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 Reporter:  rcurtin      |        Owner:                        
     Type:  enhancement  |       Status:  new                   
 Priority:  trivial      |    Milestone:  mlpack 1.0.1          
Component:  mlpack       |     Keywords:  std::string const char
 Blocking:               |   Blocked By:                        
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 Use `std::string` (or a reference to a string) instead.  This is for
 consistency's sake.  I think the main culprit is CLI, which does this all
 over the place.

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Ticket URL: <https://trac.research.cc.gatech.edu/fastlab/ticket/183>
MLPACK <www.fast-lab.org>
MLPACK is an intuitive, fast, and scalable C++ machine learning library developed by the FASTLAB at Georgia Tech under Dr. Alex Gray.