在Rust代表中,Result是一个enum枚举对象,部分源码如下: pub enum Result<T, E> { /// Contains the success value Ok(#[stable(feature = "rust1", since = "1.0.0")] T), /// Contains the error value Err(#[stable(feature = "rust1", since = "1.0.0")] E), } 通常我们使用Result的枚...
Handle std::result::Result in examples #262 Merged iSynaptic merged 1 commit into rust-rocksdb:master from mohanson:patch-1 Feb 13, 2019 +1 −1 Conversation 2 Commits 1 Checks 0 Files changed 1 Conversation Contributor mohanson commented Feb 13, 2019 No description provided. Handle ...
RustCopy enumResult<T, E> {Ok(T),// A value T was obtained.Err(E),// An error of type E was encountered instead.} In contrast to theOptiontype, which describes the possibility of theabsenceof a value, theResulttype is best suited wheneverfailuresmight occur. ...
Use what you've learned about the Result type to handle errors that result in reading files from a computer.
Use theResultenum when things could go wrong and a caller might have to deal with the problem. Start Tilføj Føj til samlinger Føj til plan Prerequisites A Rust development environment Familiarity with creating, editing, and executing Rust code by using Cargo ...
Rust provides very convinient?operator. When placed after a function call that returns aResult(or anOption), it implicitly unpacks the result: if it'sOk, it gives the underlying data back to the caller, but if it's anErr, itreturnsthe error from a function. These two implementations are...
Titanium is a lightweight metal alloy, and it offers the best corrosion (rust) resistance of any metal. It’s a little heavier than aluminum but still considered a lightweight metal and much stronger. Alas, it’s also more expensive to machine. ...
captured a shooting star and transformed it into a dashing young man named Orion. Together, they painted the night skies with adventures until Lumina learned to find joy in her own light.","Once upon a time, in a bustling bazaar in the heart of the city, there lived a clever merchant ...
Abrasion resistance; Anti-rustiness & corrosion; Not easy to break; Long service time! Use high-quality materials to form high-quality door handles. (You can replace some materials according to your needs.) Material:Stainless Steel 304/201 ...
Abrasion resistance; Anti-rustiness & corrosion; Not easy to break; Long service time! Use high-quality materials to form high-quality door handles. (You can replace some materials according to your needs.) Material: Stainless Steel 304 Spindle size: 8 x 8 x 100mm Rose ...