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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-06-19 09:26:03 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-06-19 09:26:03 +0000 |
commit | 9918693037dce8aa4bb6f08741b6812923486c18 (patch) | |
tree | 21d2b40bec7e6a7ea664acee056eb3d08e15a1cf /vendor/itertools/examples | |
parent | Releasing progress-linux version 1.75.0+dfsg1-5~progress7.99u1. (diff) | |
download | rustc-9918693037dce8aa4bb6f08741b6812923486c18.tar.xz rustc-9918693037dce8aa4bb6f08741b6812923486c18.zip |
Merging upstream version 1.76.0+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'vendor/itertools/examples')
-rw-r--r-- | vendor/itertools/examples/iris.rs | 28 |
1 files changed, 15 insertions, 13 deletions
diff --git a/vendor/itertools/examples/iris.rs b/vendor/itertools/examples/iris.rs index 987d9e9cb..af64322d6 100644 --- a/vendor/itertools/examples/iris.rs +++ b/vendor/itertools/examples/iris.rs @@ -3,7 +3,6 @@ /// and does some simple manipulations. /// /// Iterators and itertools functionality are used throughout. - use itertools::Itertools; use std::collections::HashMap; use std::iter::repeat; @@ -35,7 +34,10 @@ impl FromStr for Iris { type Err = ParseError; fn from_str(s: &str) -> Result<Self, Self::Err> { - let mut iris = Iris { name: "".into(), data: [0.; 4] }; + let mut iris = Iris { + name: "".into(), + data: [0.; 4], + }; let mut parts = s.split(",").map(str::trim); // using Iterator::by_ref() @@ -45,7 +47,7 @@ impl FromStr for Iris { if let Some(name) = parts.next() { iris.name = name.into(); } else { - return Err(ParseError::Other("Missing name")) + return Err(ParseError::Other("Missing name")); } Ok(iris) } @@ -53,12 +55,13 @@ impl FromStr for Iris { fn main() { // using Itertools::fold_results to create the result of parsing - let irises = DATA.lines() - .map(str::parse) - .fold_ok(Vec::new(), |mut v, iris: Iris| { - v.push(iris); - v - }); + let irises = DATA + .lines() + .map(str::parse) + .fold_ok(Vec::new(), |mut v, iris: Iris| { + v.push(iris); + v + }); let mut irises = match irises { Err(e) => { println!("Error parsing: {:?}", e); @@ -77,16 +80,15 @@ fn main() { // using Itertools::group_by for (species, species_group) in &irises.iter().group_by(|iris| &iris.name) { // assign a plot symbol - symbolmap.entry(species).or_insert_with(|| { - plot_symbols.next().unwrap() - }); + symbolmap + .entry(species) + .or_insert_with(|| plot_symbols.next().unwrap()); println!("{} (symbol={})", species, symbolmap[species]); for iris in species_group { // using Itertools::format for lazy formatting println!("{:>3.1}", iris.data.iter().format(", ")); } - } // Look at all combinations of the four columns |