has_command

Procedural macro for checking if a host system supports desired command.

Requirements

• Rust ^1.30

Usage

Add dependency to your Cargo.toml

toml [dependencies] has_command = "*"

Add this to your code

rust use has_command::has_command;

or

```rust

[macro_use]

externcrate hascommand; ```

Then you can use it as

```rust use std::process::Command;

fn main() { run_ls(); }

[has_command(ls)]

fn run_ls() { assert!(Command::new("ls") .output() .expect("ls should be supported") .status .success() ); } ```