67 lines
1.5 KiB
Rust
67 lines
1.5 KiB
Rust
#![warn(clippy::manual_strip)]
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fn main() {
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let s = "abc";
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if s.starts_with("ab") {
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str::to_string(&s["ab".len()..]);
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s["ab".len()..].to_string();
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str::to_string(&s[2..]);
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s[2..].to_string();
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}
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if s.ends_with("bc") {
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str::to_string(&s[..s.len() - "bc".len()]);
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s[..s.len() - "bc".len()].to_string();
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str::to_string(&s[..s.len() - 2]);
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s[..s.len() - 2].to_string();
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}
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// Character patterns
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if s.starts_with('a') {
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str::to_string(&s[1..]);
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s[1..].to_string();
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}
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// Variable prefix
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let prefix = "ab";
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if s.starts_with(prefix) {
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str::to_string(&s[prefix.len()..]);
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}
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// Constant prefix
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const PREFIX: &str = "ab";
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if s.starts_with(PREFIX) {
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str::to_string(&s[PREFIX.len()..]);
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str::to_string(&s[2..]);
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}
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// Constant target
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const TARGET: &str = "abc";
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if TARGET.starts_with(prefix) {
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str::to_string(&TARGET[prefix.len()..]);
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}
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// String target - not mutated.
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let s1: String = "abc".into();
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if s1.starts_with("ab") {
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s1[2..].to_uppercase();
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}
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// String target - mutated. (Don't lint.)
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let mut s2: String = "abc".into();
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if s2.starts_with("ab") {
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s2.push('d');
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s2[2..].to_uppercase();
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}
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// Target not stripped. (Don't lint.)
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let s3 = String::from("abcd");
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let s4 = String::from("efgh");
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if s3.starts_with("ab") {
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s4[2..].to_string();
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}
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}
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