Tomasz Kamiński 7c020642fb Fixed deduction guides for GCC 8. ...

The GCC 8 was correctly preffering the deduction guide
syntezied from the std::string_view constructor which is more
specialized than deduction guide. Changed the constructor
so the Duration cannot be deduced from it.

2019-09-01 14:43:50 -04:00

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date

Fixed deduction guides for GCC 8.

2019-09-01 14:43:50 -04:00