blocks|key|4490142|text|我找到了一个解决方案。已在结果上创建扩展。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4490143|extension+Results+{
++++func+toArray<T>(ofType:+T.Type)+->+[T]+{
++++++++var+array+=+[T]()
++++++++for+i+in+0+..<+count+{
++++++++++++if+let+result+=+self[i]+as?+T+{
++++++++++++++++array.append(result)
++++++++++++}
++++++++}

++++++++return+array
++++}
}|code-block|syntax|javascript|4490144|和使用like|4490145|class+func+getSomeObject()+->+[SomeObject]?+{
++++let+objects+=+Realm().objects(SomeObject).toArray(SomeObject)+as+[SomeObject]

++++return+objects.count+>+0+?+objects+:+nil
}|4490146|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

I found a solution. Created extension on Results.

<pre><code>extension Results {
 func toArray&lt;T&gt;(ofType: T.Type) -&gt; [T] {
 var array = [T]()
 for i in 0 ..&lt; count {
 if let result = self[i] as? T {
 array.append(result)
 }
 }

 return array
 }
}
</code></pre>

and using like

<pre><code>class func getSomeObject() -&gt; [SomeObject]? {
 let objects = Realm().objects(SomeObject).toArray(SomeObject) as [SomeObject]

 return objects.count &gt; 0 ? objects : nil
}
</code></pre>

blocks|key|4490216|text|奇怪的是，答案非常简单。我是这样做的：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4490217|let+array+=+Array(results)+//+la+fin|code-block|syntax|javascript|4490218|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Weird, the answer is very straightforward. Here is how I do it:
<pre><code>let array = Array(results) // la fin
</code></pre>

blocks|key|4490182|text|如果您一定要将Results转换为Array，请记住这会带来性能和内存开销，因为Results是惰性的。但是你可以在一行代码中完成，就像swift+2.0中的results.map+{+$0+}+(或者1.2中的map(results)+{+$0+}+)。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4490183|entityMap^0|7|7|H|5|14|7|27|I|2Y|J|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]|$9|K|A|L|B|C]|$9|M|A|N|B|C]|$9|O|A|P|B|C]|$9|Q|A|R|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|S|8|@]|D|@]|E|$]]]|G|$]]

If you absolutely must convert your <code>Results</code> to <code>Array</code>, keep in mind there's a performance and memory overhead, since <code>Results</code> is lazy. But you can do it in one line, as <code>results.map { $0 }</code> in swift 2.0 (or <code>map(results) { $0 }</code> in 1.2).

blocks|key|4490351|text|在Swift+4.2中，它就像一个扩展一样简单：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4490352|extension+Results+{
++++func+toArray()+->+[Element]+{
++++++return+compactMap+{
++++++++$0
++++++}
++++}
+}|code-block|syntax|javascript|4490353|所有需要的泛型信息已经是我们扩展的Results的一部分。|offset|length|style|CODE|4490354|要使用此命令，请执行以下操作：|4490355|let+someModelResults:+Results<SomeModel>+=+realm.objects(SomeModel.self)
let+someModelArray:+[SomeModel]+=+someModelResults.toArray()|4490356|entityMap^0|0|0|H|7|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@$I|V|J|W|K|L]]|9|@]|A|$]]|$1|M|3|N|5|6|7|X|8|@]|9|@]|A|$]]|$1|O|3|P|5|D|7|Y|8|@]|9|@]|A|$E|F]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

With Swift 4.2 it's as simple as an extension:
<pre><code>extension Results {
 func toArray() -&gt; [Element] {
 return compactMap {
 $0
 }
 }
 }

</code></pre>
All the needed generics information is already a part of <code>Results</code> which we extend.
To use this:
<pre><code>let someModelResults: Results&lt;SomeModel&gt; = realm.objects(SomeModel.self)
let someModelArray: [SomeModel] = someModelResults.toArray()
</code></pre>

blocks|key|4490257|text|将结果转换为Array不是一个好主意，因为结果是惰性的。但是如果你需要试试这个：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4490258|func+toArray<T>(ofType:+T.Type)+->+[T]+{
++++return+flatMap+{+$0+as?+T+}
}|code-block|syntax|javascript|4490259|但更好的方法是将结果传递到您需要的任何地方。您还可以将结果转换为List而不是Array。|4490260|List(realm.objects(class))|4490261|如果第一个函数不起作用，你可以试试这个：|4490262|var+refrenceBook:[RefrenceProtocol]+=+[]
let+faceTypes+=+Array(realm.objects(FaceType))
refrenceBook+=+faceTypes.map({$0+as+FaceType})|4490263|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

it's not a good idea to convert Results to Array, because Results is lazy. But if you need try this:

<pre><code>func toArray&lt;T&gt;(ofType: T.Type) -&gt; [T] {
 return flatMap { $0 as? T }
}
</code></pre>

but better way is to pass Results wherever you need. Also you can convert Results to List instead of Array.

<pre><code>List(realm.objects(class))
</code></pre>

if the first func is not working you can try this one:

<pre><code>var refrenceBook:[RefrenceProtocol] = []
let faceTypes = Array(realm.objects(FaceType))
refrenceBook = faceTypes.map({$0 as FaceType})
</code></pre>

blocks|key|4490111|text|我不确定，是否有任何有效的方法来做到这一点。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4490112|但您可以通过创建一个Swift数组并将其附加到循环中来完成此操作。|4490113|class+func+getSomeObject()+->+[SomeObject]?+{
++++var+someObjects:+[SomeObject]+=+[]
++++let+objects+=+Realm().objects(SomeObject)
++++for+object+in+objects{
++++++++someObjects+%2B=+[object]
++++}
++++return+objects.count+>+0+?+someObjects+:+nil
}|code-block|syntax|javascript|4490114|如果你觉得它太慢了。我建议您直接传递Realm+Results对象。|offset|length|style|CODE|4490115|entityMap^0|0|0|0|O|7|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|T|8|@$K|U|L|V|M|N]]|9|@]|A|$]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

I'm not sure, if there is any efficient way to do this.

But you can do it by create a Swift array and append it in the loop.

<pre><code>class func getSomeObject() -&gt; [SomeObject]? {
 var someObjects: [SomeObject] = []
 let objects = Realm().objects(SomeObject)
 for object in objects{
 someObjects += [object]
 }
 return objects.count &gt; 0 ? someObjects : nil
}
</code></pre>

If you feel it's too slow. I recommend you to pass around Realm <code>Results</code> object directly.

blocks|key|4489286|text|extension+Results+{
++++var+array:+[Element]?+{
++++++++return+self.count+>+0+?+self.map+{+$0+}+:+nil
++++}
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|4489287|因此，您可以使用like：|unstyled|4489288|Realm().objects(SomeClass.self).filter("someKey+ENDSWITH+%25@",+"sth").array|4489289|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|L|8|@]|9|@]|A|$]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$B|C]]|$1|I|3|-4|5|F|7|N|8|@]|9|@]|A|$]]]|J|$]]

<pre><code>extension Results {
 var array: [Element]? {
 return self.count &gt; 0 ? self.map { $0 } : nil
 }
}
</code></pre>

So, you can use like:

<pre><code>Realm().objects(SomeClass.self).filter("someKey ENDSWITH %@", "sth").array
</code></pre>

blocks|key|4490371|text|extension+Results+{
++++func+materialize()+->+[Element]+{
++++++++return+Array(self)
++++}
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|4490372|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre class="lang-swift prettyprint-override"><code>extension Results {
 func materialize() -&gt; [Element] {
 return Array(self)
 }
}
</code></pre>

What I want to implement:

<pre><code>class func getSomeObject() -&gt; [SomeObject]? {
 let objects = Realm().objects(SomeObject)

 return objects.count &gt; 0 ? objects : nil
}
</code></pre>

How can I return object as <code>[SomeObject]</code> instead if <code>Results</code>?

RealmSwift: Convert Results to Swift Array

Swift

我想要实现的是：class func getSomeObject() -> [SomeObject]? {    let objects = Realm().objects(SomeObject)    return objects.count > 0 ? objects : nil}如果为Results，我如何将object作为[SomeObject]返回

问RealmSwift:将结果转换为Swift数组
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