Iterating Over a Vec
To build up our practice with Iterator
, and to build some understanding for the next section on IntoIterator
, let’s write an Iterator
for a Vec
. We’re going to need a struct
that holds onto two values:
-
The
Vec
we’re iterating over -
The next position in the
Vec
we want to look at
If you remember from covering Vec
s and slices, the data type we use for indexing in a Vec
is a usize
(machine sized unsigned integer). So, we can write our VecIter
as:
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