Attention passengers: Flight 0703 is also known as Flight 451

re: Pop Quiz

Fabulous Adventures In Coding — Thu, 29 Jul 2004 21:47:00 GMT

RE: Attention passengers: Flight 0703 is also known as Flight 451

Eric Lippert — Sat, 25 Oct 2003 01:14:00 GMT

Correct -- JScript .NET does not participate in the old, 20th century unmanaged Windows Script interfaces. Rather, it uses the IVSA, aka "Script for the .NET Framework" interfaces. One of the shortcomings of the old Windows Script interfaces was that there was no way to surface warnings, only errors. IVSA provides a more fully-fledged compiler hosting mechanism. JScript .NET has some super-cool error recovery mechanisms for IVSA scenarios -- I might blog about them later, or convince Peter to.

RE: Attention passengers: Flight 0703 is also known as Flight 451

Kim Gräsman — Fri, 24 Oct 2003 16:27:00 GMT

"This is why I added code to JScript .NET so that any use of an integer decimal or octal literal that begins with zero yields a compiler warning" Out of curiosity: How does the warning manifest itself? A callback to the script host? Or is JScript.NET not part of the whole Active Scripting family?

RE: Attention passengers: Flight 0703 is also known as Flight 451

Eric Lippert — Fri, 24 Oct 2003 00:10:00 GMT

Well, sure, but an ASP page could also generate a JScript block full of unterminated strings, and we catch those at compile time.

RE: Attention passengers: Flight 0703 is also known as Flight 451

Jack Shainsky — Thu, 23 Oct 2003 23:47:00 GMT

Actually, not always the problem can be caught at compile time. If server generates pages with JS dynamically, the number containing 8 or 9 can appear in actual script once in a while. So the decision to correct the problem on the fly is not so bad as it seems.