https://errorvault.dev/tags/interfaces/ Recent content in Interfaces on ErrorVault — Developer Error Code Dictionary Hugo en-us Tue, 14 Jul 2026 11:17:00 +0800 https://errorvault.dev/golang/golang-cannot-use-as-type-type-mismatch/ Tue, 14 Jul 2026 11:17:00 +0800 https://errorvault.dev/golang/golang-cannot-use-as-type-type-mismatch/ <p>The <code>cannot use &lt;variable&gt; (type &lt;actual_type&gt;) as type &lt;expected_type&gt;</code> error in Go is a common compilation error that signals a fundamental type mismatch. Go is a statically typed language, meaning that the type of every variable is known at compile time, and strict rules govern how values of different types can interact. This error occurs when you attempt to assign a value of one type to a variable expecting a different, incompatible type, or when passing an argument of an incorrect type to a function. Resolving this error requires a clear understanding of Go&rsquo;s type system, including explicit type conversions, interface implementations, and proper handling of pointers versus values.</p>