Main-Function

2 articles

Fix E0617: main function is not allowed to have generic parameters

Rust beginner Linux macOS Windows WebAssembly Aug 2, 2026

Comprehensive guide to resolving Rust compiler error E0617, which occurs when the main function is declared with generic type parameters. Learn the correct main function signature and workarounds for generic behavior.

Fix E0072: Main Function Cannot Have Generic Type Parameters

Rust beginner Linux macOS Windows WebAssembly May 10, 2026

Rust compiler error E0072 occurs when the main function is declared with generic type parameters, which is prohibited because the program entry point cannot be generic.