Rust Result Error Example. You can think of it as a function with the type fnvalue. If you do write that in Rust the compiler will give you a warning by default controlled by the unused_must_use lint.
Mapping the Ok Result Variant To Another Type. Please be sure to answer the questionProvide details and share your research. Instead use the find method from the standard library Notice that when this function finds a matching character it doesnt just return the offsetInstead it returns SomeoffsetSome is a variant or a value constructor for the Option type.
You might instead if you dont want to handle the error simply assert success with expect.
You can think of it as a function with the type fnvalue. The map function always wraps the return value of the closure in the Ok variant. Empowering everyone to build reliable and efficient software. Mod errors Create the Error ErrorKind ResultExt and Result types error_chain.