Can you specify a “Where” in a SwiftUI ForEach statement?

问题

In a SwiftUI application, I have a large class defining data. In part of the app, I would like to look at one record where the ID matches what I am looking for. I have done it as follows, but there seems it should be more straight forward. Such as allowing a where clause. Any ideas?

ForEach (ItemList) { item in 
    if (item.itemId = thisId) {
         Text(item.description)
    }
}

So rather than going thru the entire list to find the match, I'd like to:

ForEach (ItemList WHERE ID = XXX) {

OR (more preferably, since there is no "Each" and its only one record):

Text(ItemList[itemId].description)

Can't find any specific info on this, any assistance is appreciated.

Thank you.

回答1:

you could try something like this without the ForEach:

if let item = ItemList.first(where: {$0.id == "xxxx"}) {
   Text(item.description)
}

来源：https://stackoverflow.com/questions/64637549/can-you-specify-a-where-in-a-swiftui-foreach-statement