What would be the idiomatic way to write a function which expands to the following?<div><br></div><div>f n m = do {</div><div>x1 &lt;- m;</div><div>guard (f [x1]);</div><div>x2 &lt;- m;</div><div>guard (f [x1, x2]);</div><div>


.</div><div>.</div><div>.</div><div>xn &lt;- m;</div><div>guard (f [x1,x2,...,xn]);</div><div>}</div><div><br></div><div>What I&#39;m trying to do is generate a list of lists of length n with some property (checked by f) efficiently.</div>