This lint should also be applied to the excersies,
but I am not certain how to run it for all non-crate individual files.
To re-run:
```
rustup run nightly cargo clippy --fix -- -A clippy::all -W clippy::uninlined_format_args
```
I’ve been wanting to do this for a while, but always procrastinated on it. We’ve been using Clap since the 2.0 rewrite, but Clap is known to be a fairly heavy library. Since Rustlings is usually peoples’ first contact with a Rust compilation, I think it’s in our best interests that this complation is as fast as possible. In effect, replacing Clap with the smaller, structopt-style `argh` reduces the amount of crates needing to be compiled from 82 to 60.
I also think this makes the code way easier to read, we don’t need to use Clap’s methods anymore, but can switch over to using pure Rust methods, e.g., switches are booleans, options are Option<String>s or the like, and subcommands are just structs.
This new feature can be accessed by invoking rustlings with --nocapture.
Both unit and integration tests added.
closes#262
BREAKING CHANGES:
The following function take a new boolean argument:
* `run`
* `verify`
* `test`
* `compile_and_test`
Additionally to running clippy, also compile the exercise file so that
`rustling run clippy1` works after a successful completion of the
exercise.
closes#291
Signed-off-by: Rohan Jain <crodjer@gmail.com>
Hints are now accessible using the CLI subcommand `rustlings hint
<exercise name`.
BREAKING CHANGE: This fundamentally changes the way people interact with exercises.
BREAKING CHANGE: This changes the way you use `rustlings run` by now
requiring an abridged form of the previous filename, e.g:
`rustlings run exercises/if/if1.rs` becomes
`rustlings run if1`
