use iced::{pick_list, PickList};

Compiles when targeting linux but not targeting the web.

this works: cargo build
this does not work: cargo build --target wasm32-unknown-unknown

this is the error:

error[E0432]: unresolved imports `iced::pick_list`, `iced::PickList`
 --> core/src/main.rs:9:12
  |
9 | use iced::{pick_list, PickList};
  |            ^^^^^^^^^  ^^^^^^^^ no 

建议使用ConcurrentHashMap
eg:private final Map<Class, ObjectParamMetadata> classToMetadata = new ConcurrentHashMap, ObjectParamMetadata>();

此处s是否可