145 lines
2.7 KiB
Rust
145 lines
2.7 KiB
Rust
#![feature(plugin)]
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#![plugin(clippy)]
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#[warn(collapsible_if)]
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fn main() {
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let x = "hello";
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let y = "world";
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if x == "hello" {
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if y == "world" {
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println!("Hello world!");
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}
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}
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if x == "hello" || x == "world" {
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if y == "world" || y == "hello" {
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println!("Hello world!");
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}
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}
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if x == "hello" && x == "world" {
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if y == "world" || y == "hello" {
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println!("Hello world!");
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}
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}
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if x == "hello" || x == "world" {
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if y == "world" && y == "hello" {
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println!("Hello world!");
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}
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}
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if x == "hello" && x == "world" {
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if y == "world" && y == "hello" {
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println!("Hello world!");
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}
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}
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if 42 == 1337 {
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if 'a' != 'A' {
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println!("world!")
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}
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}
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// Collaspe `else { if .. }` to `else if ..`
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if x == "hello" {
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print!("Hello ");
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} else {
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if y == "world" {
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println!("world!")
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}
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}
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if x == "hello" {
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print!("Hello ");
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} else {
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if let Some(42) = Some(42) {
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println!("world!")
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}
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}
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if x == "hello" {
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print!("Hello ");
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} else {
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if y == "world" {
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println!("world")
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}
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else {
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println!("!")
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}
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}
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if x == "hello" {
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print!("Hello ");
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} else {
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if let Some(42) = Some(42) {
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println!("world")
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}
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else {
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println!("!")
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}
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}
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if let Some(42) = Some(42) {
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print!("Hello ");
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} else {
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if let Some(42) = Some(42) {
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println!("world")
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}
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else {
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println!("!")
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}
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}
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if let Some(42) = Some(42) {
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print!("Hello ");
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} else {
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if x == "hello" {
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println!("world")
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}
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else {
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println!("!")
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}
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}
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if let Some(42) = Some(42) {
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print!("Hello ");
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} else {
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if let Some(42) = Some(42) {
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println!("world")
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}
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else {
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println!("!")
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}
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}
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// Works because any if with an else statement cannot be collapsed.
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if x == "hello" {
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if y == "world" {
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println!("Hello world!");
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}
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} else {
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println!("Not Hello world");
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}
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if x == "hello" {
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if y == "world" {
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println!("Hello world!");
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} else {
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println!("Hello something else");
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}
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}
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if x == "hello" {
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print!("Hello ");
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if y == "world" {
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println!("world!")
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}
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}
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if true {
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} else {
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assert!(true); // assert! is just an `if`
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}
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}
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