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[Matthieu Sozeau <Matthieu.Sozeau AT lri.fr>]

Le 30 janv. 09 à 05:01, Woon Ming a écrit :

> Hi Matthieu,

Hi Woon,

> Thank you very much for your prompt reply. I have seen that pattern
> construction when I was reading the reference manual (under Chapter  
> 9.1
> Syntax). However, the reason why I didn't use it is because there is  
> no
> worked examples on it.

There's a little explanation and an example in the 9.2 "Semantics"  
section.
It is a variant of [match goal with] expression.

> Thus may I ask you to give me a simple example on how it is done so  
> that?

On your example, you could probably simply write
[match goal with context [keyword] => ... end]

Hope this helps,
-- Matthieu