zero_based_index 0.1.0

[Newtype](https://doc.rust-lang.org/rust-by-example/generics/new_types.html) offering some utility methods
for [zero-based indices](https://en.wikipedia.org/wiki/Zero-based_numbering)

In order to keep the lengths of method names reasonable, several abbreviations have been used, namely
* [**len**](https://www.abbreviations.com/term/92110) for length;
* [**intvl**](https://www.abbreviations.com/term/563139) for interval;
* [**int**](https://www.abbreviations.com/term/542972) for integer.

# Examples


## Base case

```
use zero_based_index::ZeroBasedIndex;

let zbi = ZeroBasedIndex::<usize>(2);
assert_eq!(zbi.try_get_len_of_closed_int_intvl_from_0(), Some(3));
```

## Base case with `zero_based_index::AsZeroBasedIndex`

```
use zero_based_index::{ZeroBasedIndex, AsZeroBasedIndex};

let zbi = 2.as_zero_based_index();
assert_eq!(zbi.try_get_len_of_closed_int_intvl_from_0(), Some(3));
```

## Corner case

```
use zero_based_index::ZeroBasedIndex;

let zbi = ZeroBasedIndex::<usize>(usize::MAX);
assert_eq!(zbi.try_get_len_of_closed_int_intvl_from_0(), None);
```

# Unchecked math


With `unchecked_math` feature, one can also get access to unsafe superpowers.

# License


<sup>
Licensed under either of <a href="LICENSE-APACHE">Apache License, Version
2.0</a> or <a href="LICENSE-MIT">MIT license</a> at your option.
</sup>

<br>

<sub>
Unless you explicitly state otherwise, any contribution intentionally submitted
for inclusion in this crate by you, as defined in the Apache-2.0 license, shall
be dual licensed as above, without any additional terms or conditions.
</sub>