[patch] regex_traits implementation
Tue Jul 2 19:31:00 GMT 2013
>Second, making it `const` enables more potential compiler
Stylistically, we already discussed this in the past and the outcome was that normally we don't use const by value anywhere. But personally I don't have a strong opinion and certainly I would not object if it makes a difference from the optimization point of view: as far as I know it does *not*, like it does not declaring const a local, do you have some up to date evidence that it does?
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