{"record":{"id":"85010a1bba3ded8d","repo":"bevyengine/bevy","slug":"attempted-to-apply-different-sized-array-types","errorCode":null,"errorMessage":"Attempted to apply different sized `Array` types.","messagePattern":"Attempted to apply different sized `Array` types\\.","errorType":"panic","errorClass":null,"httpStatus":null,"severity":"error","filePath":"crates/bevy_reflect/src/array.rs","lineNumber":414,"sourceCode":"    Any::type_id(array).hash(&mut hasher);\n    array.len().hash(&mut hasher);\n    for value in array.iter() {\n        hasher.write_u64(value.reflect_hash()?);\n    }\n    Some(hasher.finish())\n}\n\n/// Applies the reflected [array](Array) data to the given [array](Array).\n///\n/// # Panics\n///\n/// * Panics if the two arrays have differing lengths.\n/// * Panics if the reflected value is not a [valid array](ReflectRef::Array).\n#[inline]\npub fn array_apply<A: Array + ?Sized>(array: &mut A, reflect: &dyn PartialReflect) {\n    if let ReflectRef::Array(reflect_array) = reflect.reflect_ref() {\n        if array.len() != reflect_array.len() {\n            panic!(\"Attempted to apply different sized `Array` types.\");\n        }\n        for (i, value) in reflect_array.iter().enumerate() {\n            let v = array.get_mut(i).unwrap();\n            v.apply(value);\n        }\n    } else {\n        panic!(\"Attempted to apply a non-`Array` type to an `Array` type.\");\n    }\n}\n\n/// Tries to apply the reflected [array](Array) data to the given [array](Array) and\n/// returns a Result.\n///\n/// # Errors\n///\n/// * Returns an [`ApplyError::DifferentSize`] if the two arrays have differing lengths.\n/// * Returns an [`ApplyError::MismatchedKinds`] if the reflected value is not a\n///   [valid array](ReflectRef::Array).","sourceCodeStart":396,"sourceCodeEnd":432,"githubUrl":"https://github.com/bevyengine/bevy/blob/8d743eb7dc7fcff57a7d5744d0bbf89620b1b145/crates/bevy_reflect/src/array.rs#L396-L432","documentation":"Panic in array_apply (used by PartialReflect::apply for arrays): the source and destination arrays have differing lengths, so element-wise application is impossible. Ensure both reflected arrays have the same length before applying.","triggerScenarios":"Thrown at crates/bevy_reflect/src/array.rs:412 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["Ensure both arrays have the same length before applying","Use try_apply to receive an ApplyError::DifferentSize instead of panicking","Resize or validate the source data before applying"],"exampleFix":null,"handlingStrategy":"validation","validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"8d743eb7dc7fcff57a7d5744d0bbf89620b1b145","analyzedAt":"2026-08-20T16:12:39.808Z","contentChangedAt":"2026-08-20T16:12:39.808Z","schemaVersion":2},"datasetVersion":"2026-09-14T00:17:10.932Z"}