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611 points LorenDB | 1 comments | 06 May 25 17:51 UTC | HN request time: 0s | source

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codedokode ◴[06 May 25 19:45 UTC] No.43908897[source]▶

What about catching integer overflow? Free open-source languages still cannot do it unlike they commercial competitors like Swift?

lytedev ◴[06 May 25 19:48 UTC] No.43908922[source]▶

I'm not sure if this is what you mean, exactly, but Rust indeed catches this at compile time.

replies(1): >>43909313 #

codedokode ◴[06 May 25 20:28 UTC] No.43909313[source]▶

I meant panic if during any addition (including in runtime) an overflow occurs.

tialaramex ◴[07 May 25 09:55 UTC] No.43913823{3}[source]▶

Why do you want a panic? Shift left. Overflow can be rejected at compile time for a price that you might be able to afford - generality.

Just insist that the programmer prove that overflow can't occur, and reject programs where the programmer couldn't or wouldn't do this.

1. codedokode ◴[07 May 25 17:54 UTC] No.43918718{4}[source]▶

Programmer has other things to do. Computer or CPU should do the checks.

Matt Godbolt sold me on Rust by showing me C++