[Solved] How to fill a Vec with a value

[marcianx]

See also

[solved] Fill a vector or a slice with a value

Is there an equivalent of vec![n; len] that fills an existing vector with a given value? (i.e. sets every element to n) I thought I've seen something like vec.fill(n), but it doesn't exist.

for the unfortunate lack of the obvious fill helper that you are probably looking for.

In the meantime, for a solution that iterates only once if your values have destructors, there's:

v.iter_mut().map(|x| *x = value).count();