mark_last 0.9.1

Simple extension to rust iterator's to mark the last element of an iterator
Documentation 
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# mark_last

A simple extension to rust iterators which gives the next value as well as a boolean indicating if this is the last value of the iterator.

The iterator returned yields pairs `(b, val)`, where `b` is true if this is the last value and `val` is the value returned by the iterator.

### Usage
Add `mark_last = "0.9.1"` to the dependencies section of your Cargo.toml file, and use it like so:

```rust
use mark_last::MarkLastIterator;

let in_data = vec![1, 2, 3, 5, 99];
let out_data: Vec<_> = in_data.into_iter().mark_last().collect();
assert_eq!(
    out_data,
    vec![(false, 1), (false, 2), (false, 3), (false, 5), (true, 99)]
)
```