study: use checkedint as a drop-in replacement of native long

[H. S. Teoh]

On Mon, Aug 17, 2020 at 05:10:01PM +0000, mw via Digitalmars-d wrote:
[...]
> https://issues.dlang.org/show_bug.cgi?id=21169

Chain assignment fix: https://github.com/dlang/phobos/pull/7599


T

-- 
Some days you win; most days you lose.