From: ootiib@hot.ee   
      
   On Sunday, 23 March 2014 15:25:16 UTC+2, Kalle Rutanen  wrote:   
   > The questions I have are:   
   > * is there, with C++14, a way to notify the compiler of the grouping of   
   > the template argument packs, as above?   
   > * if not, has anyone proposed this idea already?   
   > * if not, can you see flaws in this idea?   
   > * if not, would you consider it a good idea?   
      
   I feel it is not a good idea. Conceptually loose, call feels   
   hard to understand, code feels cryptic, bad interface and   
   implementation. Don't want to see it in my code bases, YMMV.   
      
   > Here's an example problem: to use perfect forwarding to construct   
   > in-place both the key and the value of an associative container.   
      
   Some article that contains some insight how to group multiple   
   parameters with tuples:   
      
   http://cpptruths.blogspot.com/2012/06/perfect-forwarding-of-parameter-groups   
   .html   
      
      
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