No difference, it was/is just used a lot in examples and advice given on here so has sort of become an unofficial standard.<br><br>Some argue the presence of "$" helps identify bindings when scanning DRL.<br><br>
<div class="gmail_quote">On 15 January 2013 20:04, suddeb <span dir="ltr"><<a href="mailto:sudipta.deb@gmail.com" target="_blank">sudipta.deb@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi,<br>
As I am very new to Drools, could you please tell me what is the difference<br>
between adding a $ at the beginning of a variable and without $.<br>
For example:<br>
rule "validate holiday"<br>
when<br>
*$h1 : Holiday( `when` == "july" )*<br>
then<br>
......<br>
end<br>
<br>
and<br>
<br>
rule "validate holiday"<br>
when<br>
*h1 : Holiday( `when` == "july" )*<br>
then<br>
......<br>
end<br>
<br>
Regards,<br>
Sudipta Deb<br>
<br>
<br>
<br>
--<br>
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</blockquote></div><br>