From: jarausch@igpm.rwth-aachen.de   
      
   Hi,   
      
   I have seen the following code in template functions   
      
   { using std::sqrt;  return sqrt(...)); }   
      
   Is this equivalent to   
      
   { return std::sqrt(....); }   
      
   or are there any "side effects" on overload resolution, ADL or similar?.   
      
   Many thanks for your help,   
   Helmut.   
      
      
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