On Sunday, 29 August 2021 at 15:42:18 UTC, Ali Çehreli wrote:
Depending on the situation, you may want to use std.conv.to,
which does a value range check and throws an exception to
prevent an error:
byte foo(byte a, byte b) {
import std.conv : to;
return (a + b).to!byte;
}
void main() {
foo(42, 42); // Works
foo(100, 100); // Throws ConvOverflowException
}
I was going to suggest `std.experimental.checkedint` as an
alternative here, but it turns out that it does integer promotion
too--`Checked!byte + Checked!byte == Checked!int`.
This seems obviously wrong to me, but according to run.dlang.io
it's always worked that way.
