77 lines
1.6 KiB
Rust
77 lines
1.6 KiB
Rust
enum SpreadsheetCell {
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Int(i32),
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Float(f32),
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Text(String),
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}
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fn main() {
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println!("Hello, world!");
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let mut v = vec![1, 2, 3, 4];
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v.push(5);
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v.push(6);
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v.push(7);
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let Some(&x) = v.get(3) else {
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println!("index not found");
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return;
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};
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for i in &v {
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print!("{i}");
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}
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println!("");
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for i in &mut v {
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*i = *i * 10;
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}
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for i in &v {
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print!("{i}");
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}
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println!("");
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println!("this is the value of the 100th index {x}");
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let _row = vec![
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SpreadsheetCell::Int(3),
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SpreadsheetCell::Float(3.14),
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SpreadsheetCell::Text("bodo".into()),
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];
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let _s1 = String::from("Hello");
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let _s2 = "World".to_string();
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let _s1: String = _s1 + &_s2;
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println!("THis is: {_s1}");
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let _s3 = "FooBar".to_string();
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let _s = format!("{_s1} {_s3}");
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println!("{}", _s);
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use std::collections::HashMap;
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let mut scores = HashMap::new();
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scores.insert("blue".to_string(), 1);
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scores.insert("red".to_string(), 3);
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let score_blue = scores.get(&"blue".to_string()).copied().unwrap_or(0);
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let score_red = scores.get(&"red".to_string()).copied().unwrap_or(0);
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println!("this is blue: {}, this is red {}", score_blue, score_red);
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for (k, v) in &scores {
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println!("team {k}: {v} scores");
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}
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scores.insert("green".to_string(), 10);
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scores.insert(String::from("Blue"), 10);
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scores.insert(String::from("Blue"), 25);
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println!("{scores:?}");
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scores.entry("blue".to_string()).or_insert(100);
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scores.entry("yellow".to_string()).or_insert(100);
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println!("{scores:?}");
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}
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