Computing Days Until with Perl and Rust

The other day Charles Choi wrote about Computing Days Until with Emacs. I decided to try it in Perl and Rust. Perl In Perl, we could do it with just the standard library like so. #!/usr/bin/env perl use v5.42; use POSIX qw(ceil); use Time::Piece; use Time::Seconds; my $target_date = shift // die '\nUsage: $0 YYYY-MM-DD\n'; my $target = Time::Piece->strptime($target_date, '%Y-%m-%d'); my $today =…