ipaddress 0.1.3

an library to handle ipv4 and ipv6 numbers
Documentation 
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// use core::fmt::Debug;
use prefix::Prefix;

///
///  Creates a new prefix object for 128 bits IPv6 addresses
///
///    prefix = IPAddressPrefix128.new 64
///      ///  64
///
pub fn new(num: usize) -> Result<Prefix, String> {
    if num <= 128 {
        //static _FROM: &'static (Fn(&Prefix, usize) -> Result<Prefix, String>) = &from;
        //static _TO_IP_STR: &'static (Fn(&Vec<u16>) -> String) = &Prefix128::to_ip_str;
        let ip_bits = ::ip_bits::v6();
        let bits = ip_bits.bits;
        return Ok(Prefix {
            num: num,
            ip_bits: ip_bits,
            net_mask: Prefix::new_netmask(num, bits),
            vt_from: from, // vt_to_ip_str: _TO_IP_STR
        });
    }
    return Err(format!("Prefix must be in range 0..128, got: {}", num));
}

#[allow(unused_variables)]
pub fn from(my: &Prefix, num: usize) -> Result<Prefix, String> {
    return new(num);
}