Alex Rønne Petersen Wrote: > I really do not see the value in allowing such syntax in the first > place. I've been told that one argument was that generated code might > use it, but I have no idea why it would be needed.
Aside from the compiler's implementation, one possible use is something I ended up doing in Javascript recently. I have a thing that takes an attribute and pastes it into a code string to check it. given validate="this.value.length > 3" it writes: if(!(this.value.length > 3)) return false; // failed validation since the given string is inside an if statement, you can't put a semicolon in there. So, if you have a check more complex than returning a boolean and want to stuff it all in that string (so functions are out), the comma lets you do it: validate="do something, true" This is pretty ugly style that I think I've only ever done in D inside a for loop... but the point is sometimes something comes up, and it's nice to have another option available, even if it is ugly.
