E0082

Warning name: ambiguous_braces

An empty {} literal is ambiguous among an empty map, JSON object, record, and block expression.

Erroneous example

///|
pub fn empty_scores() -> Unit {
  let scores = {}
  scores.set("alice", 1)
}

Suggestion

Write the intended constructor explicitly. For an empty map, use Map([]). Other alternatives include Json::empty_object(), TypeName::{}, and { () }.

///|
pub fn empty_scores() -> Unit {
  let scores : Map[String, Int] = Map([])
  scores.set("alice", 1)
}