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Java
java.time — Format and Parse
`DateTimeFormatter` replaces `SimpleDateFormat` (which was not thread-safe). Constants for the common formats; pattern strings for custom layouts.
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Rust
Parse Strings to Typed Values
`str::parse::<T>()` works for every type that implements `FromStr` — every numeric type, `bool`, `IpAddr`, `Uuid` (with the crate), etc. Returns `Result` so you can chain with `?`.