Решение на Code Identifier от Гергана Грудева

Обратно към всички решения

Към профила на Гергана Грудева

Код

#[derive(Debug)]

pub struct CodeIdentifier {

words : Vec<String>

}

impl CodeIdentifier {

pub fn new(identifier: &str) -> Option<Self> {

let id = identifier.trim().to_lowercase();

let mut copy = Vec::new();

for word in id.split("_") {

copy.push(String::from(word));

}

if Self::is_valid(copy) {

let mut res = Vec::new();

for word in id.split("_") {

res.push(String::from(word));

}

Some(CodeIdentifier {words: res})

}

else {

None

}

}

pub fn camelcase(&self) -> String {

let mut res : Vec<String> = Vec::new();

let mut copy = self.words.to_vec();

copy.remove(0);

let first : String = self.words.to_vec().remove(0);

res.push(first);

for word in copy {

res.push(String::from(Self::capitalize(&word)));

}

res.join("")

}

Копирането и местенето напред-назад са малко трудни за проследяване, и донякъде ненужни. Вместо да създадеш нов вектор само за първия елемент, може да пробваш нещо такова:

pub fn camelcase(&self) -> String {
    let mut res = Vec::new();
    let mut words = self.words.iter();

    if let Some(first_part) = words.next() {
        res.push(first_part.clone());
        for word in words {
            res.push(Self::capitalize(&word));
        }
    }

    res.join("")
}

Андрей коментира преди почти 7 години

pub fn titlecase(&self) -> String {

let mut res = Vec::new();

for word in self.words.to_vec() {

res.push(String::from(Self::capitalize(&word)));

}

res.join("")

}

pub fn kebabcase(&self) -> String {

let mut res = Vec::new();

for word in self.words.to_vec() {

res.push(String::from(word));

}

res.join("-")

}

pub fn underscore(&self) -> String {

let mut res = Vec::new();

for word in self.words.to_vec() {

res.push(String::from(word));

}

res.join("_")

}

pub fn screaming_snakecase(&self) -> String {

let mut res = Vec::new();

for word in self.words.to_vec() {

res.push(String::from(word.to_uppercase()));

}

res.join("_")

}

fn is_valid(mut words : Vec<String>) -> bool {

let first : String = words.remove(0).to_string();

let first_letter = first.chars().next().unwrap();

if !first_letter.is_alphabetic() {

return false;

}

for word in words {

if !Self::is_word(&word) {

return false;

}

}

true

}

fn is_word(s : &str) -> bool {

for ch in s.chars() {

if !ch.is_alphabetic() && !ch.is_numeric() && ch != '_' {

return false;

}

}

true

}

fn capitalize(s : &str) -> String {

let mut c = s.chars();

match c.next() {

Some(f) => f.to_uppercase().chain(c).collect(),

None => String::new()

}

Добра употреба на chain.

Андрей коментира преди почти 7 години

}

}

Лог от изпълнението

Compiling solution v0.1.0 (/tmp/d20190123-22631-1php60b/solution)
    Finished dev [unoptimized + debuginfo] target(s) in 5.15s
     Running target/debug/deps/solution-2e785d603b538f71

running 0 tests

test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out

     Running target/debug/deps/solution_test-29808948fb50ed3a

running 15 tests
test solution_test::test_both_static_and_dynamic_strings ... ok
test solution_test::test_camelcase_basic ... ok
test solution_test::test_cyrillic1 ... ok
test solution_test::test_digits1 ... ok
test solution_test::test_digits2 ... ok
test solution_test::test_digits3 ... ok
test solution_test::test_kebabcase_basic ... ok
test solution_test::test_multibyte_uppercase ... ok
test solution_test::test_normalize_case1 ... ok
test solution_test::test_normalize_case2 ... ok
test solution_test::test_screaming_snakecase_basic ... ok
test solution_test::test_titlecase_basic ... ok
test solution_test::test_underscore_basic ... ok
test solution_test::test_validity ... FAILED
test solution_test::test_whitespace ... ok

failures:

---- solution_test::test_validity stdout ----
thread 'solution_test::test_validity' panicked at 'assertion failed: CodeIdentifier::new("some-var").is_none()', tests/solution_test.rs:9:5
note: Run with `RUST_BACKTRACE=1` for a backtrace.


failures:
    solution_test::test_validity

test result: FAILED. 14 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out

error: test failed, to rerun pass '--test solution_test'

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