constime 0.4.1

Zig's comptime for Rust with zero dependencies. Mostly something to play around with until more stuff is const fn.
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<h1 align="center"> constime </h1>

<p align="center">
	Zig's <code>comptime</code> for Rust, with zero dependencies.
</p>

<div align="center">
	<a href="https://github.com/DvvCz/constime/actions">
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	</a>
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	</a>
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</div>

## Usage

```bash
cargo add constime
```

Dependencies in `comptime!` can be stored in either `[dependencies]` or `[build-dependencies]`.

If you use build dependencies, you will need to explicitly link with `extern crate` and a `build.rs` file to force them to compile.

## Example

```rust
fn main() {
	use constime::comptime;

	// Let's use a pure-build time dependency
	println!("Here's a fact about the number 5: {}", comptime! {
		extern crate ureq;

		ureq::get("http://numbersapi.com/5/math")
			.call()
			.unwrap()
			.into_string()
			.unwrap()
	});

	// Standard library works fine too.
	println!(
		"Compiled {} seconds after unix epoch.",
		comptime! {
			std::time::SystemTime::now()
				.duration_since(std::time::UNIX_EPOCH)
				.expect("Time went backwards")
				.as_secs()
		}
	);
}
```

## Note

**You should get autocomplete and error feedback when using the macro.**

This by creating temporary binaries running each of your constime! invocations, stored in [`std::env::temp_dir()`](https://doc.rust-lang.org/std/env/fn.temp_dir.html)`.join("constime")`