ios - 编译器无法对表达式Swift 5进行类型检查？

Question

尝试编译我的代码时遇到麻烦，因为此错误不断出现:

The compiler is unable to type-check this expression in reasonable time; try breaking up the expression into distinct sub-expressions.

这是代码中出现错误的部分:


关于如何获取代码进行编译和清除此错误的任何想法？

Answer 1

解决方案是将您的表达式分成许多表达式，例如尝试替换:

return Council(status: status ?? self.status,
council : council ?? self.council,
year: year ?? self.year,
councilRating: councilRating ?? self.councilRating,
annualChange: annualChange ?? self.annualChange,
councilTax: councilTax ?? self.councilTax)

带有:

let s = status ?? self.status
let c = council ?? self.council
let y = year ?? self.year
let cr = councilRating ?? self.councilRating
let ac = annualChange ?? self.annualChange
let ct = councilTax ?? self.councilTax


return Council(status: s,
council : c,
year: y,
councilRating: cr,
annualChange: ac,
councilTax: ct)