[rules-users] Difference between adding $ at the beginning of a variable

[Michael Anstis]

No difference, it was/is just used a lot in examples and advice given on
here so has sort of become an unofficial standard.

Some argue the presence of "$" helps identify bindings when scanning DRL.

On 15 January 2013 20:04, suddeb <sudipta.deb at gmail.com> wrote:

> Hi,
> As I am very new to Drools, could you please tell me what is the difference
> between adding a $ at the beginning of a variable and without $.
> For example:
> rule "validate holiday"
> when
>    *$h1 : Holiday( `when` == "july" )*
> then
>    ......
> end
>
> and
>
> rule "validate holiday"
> when
>    *h1 : Holiday( `when` == "july" )*
> then
>    ......
> end
>
> Regards,
> Sudipta Deb
>
>
>
> --
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