[Haskell-beginners] How to write replicateM with interspersed guards?
Sebastien Zany
sebastien at chaoticresearch.com
Tue Oct 4 14:27:59 CEST 2011
What would be the idiomatic way to write a function which expands to the
following?
f n m = do {
x1 <- m;
guard (f [x1]);
x2 <- m;
guard (f [x1, x2]);
.
.
.
xn <- m;
guard (f [x1,x2,...,xn]);
}
What I'm trying to do is generate a list of lists of length n with some
property (checked by f) efficiently.
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