我正在尝试递归打印出一个对象及其子类型的所有属性等。我的对象模型如下...
type suggestedFooWidget = {
value: float ;
hasIncreasedSinceLastPeriod: bool ;
}
type firmIdentifier = {
firmId: int ;
firmName: string ;
}
type authorIdentifier = {
authorId: int ;
authorName: string ;
firm: firmIdentifier ;
}
type denormalizedSuggestedFooWidgets = {
id: int ;
ticker: string ;
direction: string ;
author: authorIdentifier ;
totalAbsoluteWidget: suggestedFooWidget ;
totalSectorWidget: suggestedFooWidget ;
totalExchangeWidget: suggestedFooWidget ;
todaysAbsoluteWidget: suggestedFooWidget ;
msdAbsoluteWidget: suggestedFooWidget ;
msdSectorWidget: suggestedFooWidget ;
msdExchangeWidget: suggestedFooWidget ;
}
而我的递归是基于以下模式匹配...
let rec printObj (o : obj) (sb : StringBuilder) (depth : int)
let props = o.GetType().GetProperties()
let enumer = props.GetEnumerator()
while enumer.MoveNext() do
let currObj = (enumer.Current : obj)
ignore <|
match currObj with
| :? string as s -> sb.Append(s.ToString())
| :? bool as c -> sb.Append(c.ToString())
| :? int as i -> sb.Append(i.ToString())
| :? float as i -> sb.Append(i.ToString())
| _ -> printObj currObj sb (depth + 1)
sb
在调试器中,我看到currObj的类型为字符串、整数、浮点数等,但它总是跳转到底部的默认情况。 有任何想法为什么会发生这种情况?