[mlpack-svn] r11453 - mlpack/trunk/src/mlpack/core/util

[fastlab-svn at coffeetalk-1.cc.gatech.edu]

Author: jcline3
Date: 2012-02-09 19:10:41 -0500 (Thu, 09 Feb 2012)
New Revision: 11453

Modified:
   mlpack/trunk/src/mlpack/core/util/prefixedoutstream_impl.hpp
Log:
This fixes the arm test bug.

For whatever reason, boost::lexical_cast doesn't work right all of the time.
Thus, switch to stringstreams, since we are always converting *into* a string,
this should be fine for everything.



Modified: mlpack/trunk/src/mlpack/core/util/prefixedoutstream_impl.hpp
===================================================================
--- mlpack/trunk/src/mlpack/core/util/prefixedoutstream_impl.hpp	2012-02-10 00:07:50 UTC (rev 11452)
+++ mlpack/trunk/src/mlpack/core/util/prefixedoutstream_impl.hpp	2012-02-10 00:10:41 UTC (rev 11453)
@@ -10,6 +10,7 @@
 
 // Just in case it hasn't been included.
 #include "prefixedoutstream.hpp"
+#include <iostream>
 
 template<typename T>
 PrefixedOutStream& PrefixedOutStream::operator<<(T s)
@@ -25,14 +26,27 @@
   // We will use this to track whether or not we need to terminate at the end of
   // this call (only for streams which terminate after a newline).
   bool newlined = false;
+  std::string line;
 
   // If we need to, output the prefix.
   PrefixIfNeeded();
 
-  // Now we try to output the T (whatever it is).
-  try
+  std::ostringstream convert;
+  convert << val;
+
+  if(convert.fail())
   {
-    std::string line = boost::lexical_cast<std::string>(val);
+    PrefixIfNeeded();
+    if (!ignoreInput)
+    {
+      destination << "Failed lexical_cast<std::string>(T) for output; output"
+          " not shown." << std::endl;
+      newlined = true;
+    }
+  }
+  else
+  {
+    line = convert.str();
 
     // If the length of the casted thing was 0, it may have been a stream
     // manipulator, so send it directly to the stream and don't ask questions.
@@ -74,17 +88,6 @@
         destination << line.substr(pos);
     }
   }
-  catch (boost::bad_lexical_cast &e)
-  {
-    // Warn the user that there was a failure.
-    PrefixIfNeeded();
-    if (!ignoreInput)
-    {
-      destination << "Failed lexical_cast<std::string>(T) for output; output"
-          " not shown." << std::endl;
-      newlined = true;
-    }
-  }
 
   // If we displayed a newline and we need to terminate afterwards, do that.
   if (fatal && newlined)