<div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class="">
><br>
> Why do you think "f(X, Y) when U = X+Y, U > 0 ; V = Y*X, V < 0 ->" is<br>
> wrong?<br>
<br>
</span>Because the language specification and the compiler say it is.<br><br></blockquote><div><br></div><div>Rewording my question :) - why it is wrong to allow such guard expressions at the compiler level? </div><div><br></div><div> </div></div></div></div>