On Sunday, 4 August 2019 at 18:22:30 UTC, matheus wrote:
On Sunday, 4 August 2019 at 18:15:30 UTC, Max Haughton wrote:
What do you want to do? If you just want to count to 255 then use a foreach

This was just an example, what I'd like in this code is either: Get an error (exception) when overflow or even an warning (Only if "some" flag was active).

Use std.experimental.checkedint:

import std.stdio;
import std.experimental.checkedint;

void main()
    for(Checked!(ubyte, Throw) u = ubyte(250); u < 256; ++u) {

An exception will be thrown when you attempt to increment u above 255.

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