On Friday, 12 April 2019 at 10:01:40 UTC, wjoe wrote: > It's not entirely related but another use of the underscore is > to make integers more readable. E.g.: > > int x = 1_000_000_000_000; And, I suspect, to make numbers easier to translate between English Canadian and French Canadian: Canadian: $1,200,333.45 Canadien: $1.200.333,45