envparse 0.1.0

Parse compile-time environment variables into `const`s
Documentation 
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// compile-flags: --error-format=human
#![crate_type = "bin"]
extern crate envparse;

const A: usize = envparse::parse_env!("USIZE" as usize else 32);

const B: u8 = envparse::parse_env!("SMALLER" as u8 else 40);

fn main() {
    assert_eq!(A, 32);
    assert_eq!(B, 40);
}