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Converting between different String types in Rust
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| let s: String = ... | |
| let st: &str = ... | |
| let u: &[u8] = ... | |
| let b: [u8; 3] = b"foo" | |
| let v: Vec<u8> = ... | |
| let os: OsString = ... | |
| let ost: OsStr = ... | |
| From To Use Comment | |
| ---- -- --- ------- | |
| &str -> String String::from(st) | |
| &str -> &[u8] st.as_bytes() | |
| &str -> Vec<u8> st.as_bytes().to_owned() via &[u8] | |
| &str -> &OsStr OsStr::new(st) | |
| String -> &str &s alt. s.as_str() | |
| String -> &[u8] s.as_bytes() | |
| String -> Vec<u8> s.into_bytes() | |
| String -> OsString OsString::from(s) | |
| &[u8] -> &str str::from_utf8(u).unwrap() | |
| &[u8] -> String String::from_utf8(u).unwrap() | |
| &[u8] -> Vec<u8> u.to_owned() | |
| &[u8] -> &OsStr OsStr::from_bytes(u) use std::os::unix::ffi::OsStrExt; | |
| [u8; 3] -> &[u8] &b[..] byte literal | |
| [u8; 3] -> &[u8] "foo".as_bytes() alternative via utf8 literal | |
| Vec<u8> -> &str str::from_utf8(&v).unwrap() via &[u8] | |
| Vec<u8> -> String String::from_utf8(v) | |
| Vec<u8> -> &[u8] &v | |
| Vec<u8> -> OsString OsString::from_vec(v) use std::os::unix::ffi::OsStringExt; | |
| &OsStr -> &str ost.to_str().unwrap() | |
| &OsStr -> String ost.to_os_string().into_string() via OsString | |
| .unwrap() | |
| &OsStr -> Cow<str> ost.to_string_lossy() Unicode replacement characters | |
| &OsStr -> OsString ost.to_os_string() | |
| &OsStr -> &[u8] ost.as_bytes() use std::os::unix::ffi::OsStringExt; | |
| OsString -> String os.into_string().unwrap() returns original OsString on failure | |
| OsString -> &str os.to_str().unwrap() | |
| OsString -> &OsStr os.as_os_str() | |
| OsString -> Vec<u8> os.into_vec() use std::os::unix::ffi::OsStringExt; | |
| /// | |
| /// Source: | |
| /// | |
| /// Original source is this document on Pastebin: | |
| /// https://web.archive.org/web/20190710121935/https://pastebin.com/Mhfc6b9i |
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