error: cannot find macro lazy_static in this scope
// 引入lazy_static宏
use lazy_static::lazy_static;
Error code E0596
不可变对象不能作为可变指针被借用。
rustc --explain E0605.
Line 12: Char 20: error: non-primitive cast: Option<char> as i32 (solution.rs)
|
12 | res += tmp as i32 * f;
| ^^^^^^^^^^ an as expression can be used to convert enum types to numeric types only if the enum type is unit-only or field-less
|
= note: see https://doc.rust-lang.org/reference/items/enumerations.html#casting for more information
For more information about this error, try rustc --explain E0605.
error: could not compile prog (bin “prog”) due to 1 previous error