Mirrors/rust-cookbook
2
0
Fork 0
mirror of https://github.com/rust-lang-nursery/rust-cookbook synced 2024-11-22 03:23:05 +00:00
Code Issues Projects Releases Packages Wiki Activity

Merge pull request #387 from skierpage/patch-1

Browse source 
rephrase text pattern replacement example
This commit is contained in:
Andrew Gauger 2018-04-18 12:36:46 -07:00 committed by GitHub
commit 8c15ed7c7f
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
1 changed files with 6 additions and 6 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

12
src/basics.md
View file

@ -825,8 +825,8 @@ fn main() {
[![regex-badge]][regex] [![lazy_static-badge]][lazy_static] [![cat-text-processing-badge]][cat-text-processing] [![regex-badge]][regex] [![lazy_static-badge]][lazy_static] [![cat-text-processing-badge]][cat-text-processing]
Replaces all occurrences of the hyphenated British English date pattern `2013-01-15` Replaces all occurrences of the standard ISO 8601 *YYYY-MM-DD* date pattern
with its equivalent slashed American English date pattern `01/15/2013`. with the equivalent American English date with slashes; for example `2013-01-15` becomes `01/15/2013`.
The method [`Regex::replace_all`] replaces all occurrences of the whole regex. The The method [`Regex::replace_all`] replaces all occurrences of the whole regex. The
`Replacer` trait helps to figure out the replacement string. This trait is implemented `Replacer` trait helps to figure out the replacement string. This trait is implemented
@ -844,17 +844,17 @@ use regex::Regex;
fn reformat_dates(before: &str) -> Cow<str> { fn reformat_dates(before: &str) -> Cow<str> {
lazy_static! { lazy_static! {
static ref ENGL_DATE_REGEX : Regex = Regex::new( static ref ISO8601_DATE_REGEX : Regex = Regex::new(
r"(?P<y>\d{4})-(?P<m>\d{2})-(?P<d>\d{2})" r"(?P<y>\d{4})-(?P<m>\d{2})-(?P<d>\d{2})"
).unwrap(); ).unwrap();
} }
ENGL_DATE_REGEX.replace_all(before, "$m/$d/$y") ISO8601_DATE_REGEX.replace_all(before, "$m/$d/$y")
} }
fn main() { fn main() {
let before = "2012-03-14, 2013-01-01 and 2014-07-05"; let before = "2012-03-14, 2013-01-15 and 2014-07-05";
let after = reformat_dates(before); let after = reformat_dates(before);
assert_eq!(after, "03/14/2012, 01/01/2013 and 07/05/2014"); assert_eq!(after, "03/14/2012, 01/15/2013 and 07/05/2014");
} }
``` ```