Result Type

Definitions

1. An algebraic type that represents either a success value or an error, forcing callers to explicitly handle both outcomes at compile time instead of relying on exceptions or null checks. Rust's Result<T, E>, Haskell's Either, Swift's Result, and Kotlin's Result all encode fallibility in the type system so errors cannot be silently ignored.

   In plain English: A special type that wraps a value and says 'this is either a success or an error' — the code won't compile unless you deal with both possibilities.

   Example: "The function returns Result<User, DbError> — you have to match on Ok or Err before you can access the user, so unhandled errors are impossible."

Related Terms

• Discriminant
• Error Union
• Trait
• Option
• Panic
• Reflection
• Rust Lifetime
• Rust Trait
• Send
• Tagged Union
• Unwrap
• Yew