= Rust  Fast 1brc =
 * 1brc (1 Billion Row challenge) is simple problem with a 1000 Million cities and temperature to be colated averaged and sorted as fast as possible.
    * Obviously Rust is a good candidate as it is lowlevel and fast.
 
 * Rust - file read speadup by order of magniture using unsafe mmap to map file directly into Ram.
   * https://docs.rs/memmap2/latest/memmap2/struct.Mmap
     * https://github.com/RazrFalcon/memmap2-rs