[mlpack-git] master: Fix a mistake in metric policy. (27ebca1)

[gitdub at mlpack.org]

Repository : https://github.com/mlpack/mlpack
On branch  : master
Link       : https://github.com/mlpack/mlpack/compare/d502539e6180124a4e0ffdaf27c9cc3295a7849b...1f562a1aba7ae55475afcc95659511c2b7f694e5

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commit 27ebca1df94ca030ad7efde55f1a348e1188e3b5
Author: MarcosPividori <marcos.pividori at gmail.com>
Date:   Thu May 12 10:45:16 2016 -0300

    Fix a mistake in metric policy.


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27ebca1df94ca030ad7efde55f1a348e1188e3b5
 doc/policies/trees.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/doc/policies/trees.hpp b/doc/policies/trees.hpp
index e877294..89bed8c 100644
--- a/doc/policies/trees.hpp
+++ b/doc/policies/trees.hpp
@@ -408,7 +408,7 @@ tree building and other operations:
 // This function is required by the MetricType policy.
 // Evaluate the metric between two points (which may be of different types).
 template<typename VecTypeA, typename VecTypeB>
-void Evaluate(VecTypeA& a, VecTypeB& b);
+double Evaluate(const VecTypeA& a, const VecTypeB& b);
 @endcode
 
 Note that this method is not necessarily static, so a \c MetricType object