RE: Pattern matching in functions
- To: mathgroup at smc.vnet.net
- Subject: [mg54394] RE: [mg54379] Pattern matching in functions
- From: "Barthelet, Luc" <lucb at ea.com>
- Date: Sun, 20 Feb 2005 00:07:53 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
In[1]:
Cases[l^4*a[b][l] + l*a[c][l], a[y_][z_] -> y, Infinity]
Out[1]:
{b,c}
-----Original Message-----
From: Maximilian Ulbrich [mailto:mulbrich at berkeley.edu]
To: mathgroup at smc.vnet.net
Subject: [mg54394] [mg54379] Pattern matching in functions
Hi,
I would like to find subexpressions using Cases.
In the following case, I expected to find a[b] and a[c] and therefore
get {b,c} as the result. However, I get {l,l}.
What happens and how can I solve this?
Cases[l^4*a[b][l] + l*a[c][l], x_a[y_] -> y, {0, Infinity}]
Thanks,
Max