// ## External Dependencies
//@ This leaves us with just one more piece to complete rgrep: Taking arguments from the command-line. We could now directly work on
-//@ [`std::env::args`](http://doc.rust-lang.org/stable/std/env/fn.args.html) to gain access to those arguments, and this would become
+//@ [`std::env::args`](https://doc.rust-lang.org/stable/std/env/fn.args.html) to gain access to those arguments, and this would become
//@ a pretty boring lesson in string manipulation. Instead, I want to use this opportunity to show how easy it is to benefit from
//@ other people's work in your program.
//@
// We also import some other pieces that we will need.
extern crate docopt;
use self::docopt::Docopt;
- use part12::{run, Options, OutputMode};
+ use part13::{run, Options, OutputMode};
use std::process;
// The `USAGE` string documents how the program is to be called. It's written in a format that `docopt` can parse.
//@ encoded string, that is, a bunch of bytes in memory (`[u8]`) that are valid according of UTF-8. `str` is unsized. `&str`
//@ stores the address of the character data, and their length. String literals like "this one" are
//@ of type `&'static str`: They point right to the constant section of the binary, so
- //@ However, the borrow is valid for as long as the program runs, hence it has lifetime `'static`. Calling
- //@ `to_string` will copy the string data into an owned buffer on the heap, and thus convert it to `String`.
+ //@ the borrow is valid for the entire program. The bytes pointed to by `pattern`, on the other hand, are owned by someone else,
+ //@ and we call `to_string` on it to copy the string data into a buffer on the heap that we own.
let mode = if count {
OutputMode::Count
} else if sort {
// the pattern to regular-expression mode, and change `filter_lines` to honor this option. The documentation of regex is available from its crates.io site.
// (You won't be able to use the `regex!` macro if you are on the stable or beta channel of Rust. But it wouldn't help for our use-case anyway.)
-//@ [index](main.html) | [previous](part13.html) | [next](part15.html)
+//@ [index](main.html) | [previous](part13.html) | [raw source](https://www.ralfj.de/git/rust-101.git/blob_plain/HEAD:/workspace/src/part14.rs) | [next](part15.html)