E0599
rust
type_error
ai_generated
true
错误[E0599]:在当前作用域中,结构体`HashMap<String, i32>`没有名为`find`的方法
error[E0599]: no method named `find` found for struct `HashMap<String, i32>` in the current scope
ID: rust/e0599-no-method-named-find-for-struct-hashmap
90%修复率
88%置信度
1证据数
2023-07-01首次发现
版本兼容性
| 版本 | 状态 | 引入 | 弃用 | 备注 |
|---|---|---|---|---|
| rustc 1.68.0 | active | — | — | — |
| rustc 1.72.0 | active | — | — | — |
| rustc 1.78.0 | active | — | — | — |
根因分析
调用了该类型不存在的方法,通常是由于将方法名与另一种类型混淆(例如,在HashMap上直接使用迭代器的`find`方法)。
English
Calling a method that doesn't exist on the type, often due to confusing the method name with another type (e.g., using `find` from iterators on a HashMap directly).
官方文档
https://doc.rust-lang.org/error_codes/E0599.html解决方案
-
在HashMap上调用`.iter()`获取迭代器,然后在迭代器上使用`.find()`。
-
使用`HashMap::get`或`HashMap::contains_key`进行基于键的查找,而不是使用`find`。
无效尝试
常见但无效的做法:
-
90% 失败
HashMap itself doesn't implement Iterator; you need to call `.iter()` first.
-
80% 失败
Dereferencing a HashMap doesn't give you an iterator; it gives you the inner type, which also doesn't have `find`.
-
95% 失败
HashMap does not have a static `find` method; it's an iterator method.