ko: refresh translation for std (#938)

Part of #925.

po/ko.po

@@ -6476,6 +6476,16 @@ msgid ""
 "}\n"
 "```"
 msgstr ""
+"```rust,editable\n"
+"fn main() {\n"
+"    let numbers = vec![10, 20, 30];\n"
+"    let first: Option<&i8> = numbers.first();\n"
+"    println!(\"first: {first:?}\");\n"
+"\n"
+"    let idx: Result<usize, usize> = numbers.binary_search(&10);\n"
+"    println!(\"idx: {idx:?}\");\n"
+"}\n"
+"```"
 
 #: src/std/option-result.md:18
 msgid ""
@@ -6520,6 +6530,22 @@ msgid ""
 "}\n"
 "```"
 msgstr ""
+"```rust,editable\n"
+"fn main() {\n"
+"    let mut s1 = String::new();\n"
+"    s1.push_str(\"Hello\");\n"
+"    println!(\"s1: len = {}, capacity = {}\", s1.len(), s1.capacity());\n"
+"\n"
+"    let mut s2 = String::with_capacity(s1.len() + 1);\n"
+"    s2.push_str(&s1);\n"
+"    s2.push('!');\n"
+"    println!(\"s2: len = {}, capacity = {}\", s2.len(), s2.capacity());\n"
+"\n"
+"    let s3 = String::from(\"🇨🇭\");\n"
+"    println!(\"s3: len = {}, number of chars = {}\", s3.len(),\n"
+"             s3.chars().count());\n"
+"}\n"
+"```"
 
 #: src/std/string.md:22
 msgid ""
@@ -6583,6 +6609,29 @@ msgid ""
 "}\n"
 "```"
 msgstr ""
+"```rust,editable\n"
+"fn main() {\n"
+"    let mut v1 = Vec::new();\n"
+"    v1.push(42);\n"
+"    println!(\"v1: len = {}, capacity = {}\", v1.len(), v1.capacity());\n"
+"\n"
+"    let mut v2 = Vec::with_capacity(v1.len() + 1);\n"
+"    v2.extend(v1.iter());\n"
+"    v2.push(9999);\n"
+"    println!(\"v2: len = {}, capacity = {}\", v2.len(), v2.capacity());\n"
+"\n"
+"    // 요소로 벡터를 초기화하는 표준 매크로입니다.\n"
+"    let mut v3 = vec![0, 0, 1, 2, 3, 4];\n"
+"\n"
+"    // 짝수 요소만 유지합니다.\n"
+"    v3.retain(|x| x % 2 == 0);\n"
+"    println!(\"{v3:?}\");\n"
+"\n"
+"    // 연속 중복을 삭제합니다.\n"
+"    v3.dedup();\n"
+"    println!(\"{v3:?}\");\n"
+"}\n"
+"```"
 
 #: src/std/vec.md:29
 msgid ""
@@ -6651,6 +6700,41 @@ msgid ""
 "}\n"
 "```"
 msgstr ""
+"```rust,editable\n"
+"use std::collections::HashMap;\n"
+"\n"
+"fn main() {\n"
+"    let mut page_counts = HashMap::new();\n"
+"    page_counts.insert(\"Adventures of Huckleberry Finn\".to_string(), "
+"207);\n"
+"    page_counts.insert(\"Grimms' Fairy Tales\".to_string(), 751);\n"
+"    page_counts.insert(\"Pride and Prejudice\".to_string(), 303);\n"
+"\n"
+"    if !page_counts.contains_key(\"Les Misérables\") {\n"
+"        println!(\"We know about {} books, but not Les Misérables.\",\n"
+"                 page_counts.len());\n"
+"    }\n"
+"\n"
+"    for book in [\"Pride and Prejudice\", \"Alice's Adventure in "
+"Wonderland\"] {\n"
+"        match page_counts.get(book) {\n"
+"            Some(count) => println!(\"{book}: {count} pages\"),\n"
+"            None => println!(\"{book} is unknown.\")\n"
+"        }\n"
+"    }\n"
+"\n"
+"    // 아무것도 찾을 수 없는 경우 .entry() 메서드를 사용하여 값을 삽입합니"
+"다.\n"
+"    for book in [\"Pride and Prejudice\", \"Alice's Adventure in "
+"Wonderland\"] {\n"
+"        let page_count: &mut i32 = page_counts.entry(book.to_string())."
+"or_insert(0);\n"
+"        *page_count += 1;\n"
+"    }\n"
+"\n"
+"    println!(\"{page_counts:#?}\");\n"
+"}\n"
+"```"
 
 #: src/std/hashmap.md:38
 msgid ""
@@ -6800,6 +6884,19 @@ msgid ""
 "}\n"
 "```"
 msgstr ""
+"```rust,editable\n"
+"#[derive(Debug)]\n"
+"enum List<T> {\n"
+"    Cons(T, Box<List<T>>),\n"
+"    Nil,\n"
+"}\n"
+"\n"
+"fn main() {\n"
+"    let list: List<i32> = List::Cons(1, Box::new(List::Cons(2, Box::"
+"new(List::Nil))));\n"
+"    println!(\"{list:?}\");\n"
+"}\n"
+"```"
 
 #: src/std/box-recursive.md:18
 msgid ""
@@ -6982,6 +7079,33 @@ msgid ""
 "}\n"
 "```"
 msgstr ""
+"```rust,editable\n"
+"use std::rc::{Rc, Weak};\n"
+"use std::cell::RefCell;\n"
+"\n"
+"#[derive(Debug)]\n"
+"struct Node {\n"
+"    value: i64,\n"
+"    parent: Option<Weak<RefCell<Node>>>,\n"
+"    children: Vec<Rc<RefCell<Node>>>,\n"
+"}\n"
+"\n"
+"fn main() {\n"
+"    let mut root = Rc::new(RefCell::new(Node {\n"
+"        value: 42,\n"
+"        parent: None,\n"
+"        children: vec![],\n"
+"    }));\n"
+"    let child = Rc::new(RefCell::new(Node {\n"
+"        value: 43,\n"
+"        children: vec![],\n"
+"        parent: Some(Rc::downgrade(&root))\n"
+"    }));\n"
+"    root.borrow_mut().children.push(child);\n"
+"\n"
+"    println!(\"graph: {root:#?}\");\n"
+"}\n"
+"```"
 
 #: src/modules.md:1
 msgid "# Modules"