Glossary coding Term Page

Result

A Rust enum that models success and failure as explicit values

result #rust#error-handling#enum

Korean version

Aliases

Result<T, E>error result

Prerequisites

Enum

Related Concepts

Enum match Expression Option Function Iterator

Core Idea

Result is Rust's standard enum for representing success as Ok(T) and failure as Err(E). Because the error path stays visible in the type system, callers must handle failure deliberately instead of ignoring it.

Why It Matters Here

Mathbong uses Result for file reads, JSON parsing, async functions, and match-based error handling. It is one of the clearest expressions of Rust's idea that recoverable failure should be treated as data.

Posts Mentioning This Concept

[Rust Series 9] Expressing State with Enums and Pattern Matching Use enum, match, and Option to represent diverse states safely and branch without guesswork.[Rust Series Part 15] Shaping Data Flow with Iterators and Closures Combine the Iterator trait and closures to build readable data-processing pipelines.[Rust Series Part 11] Error Handling Basics Learn how to design safe failure paths with Result, panic!, and the ? operator.