StackOverflow2013

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plurals

PO
primarykey
Id
4813143
data
AcceptedAnswerId
0
AnswerCount
0
ClosedDate
CommentCount
0
CommunityOwnedDate
CreationDate
2011-01-27T05:45:02.687
FavoriteCount
0
LastActivityDate
2011-01-27T22:44:11.907
LastEditDate
2017-05-23T12:16:44.687
LastEditorUserId
-1
OwnerUserId
0
ParentId
4812592
PostTypeId
2
Score
0
ViewCount
0
LastEditorDisplayName
user295190
text
Body
<pre><code>using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Diagnostics; namespace InOutRef { static class InOutRef { public static void In(int i) { Console.WriteLine(i); i=100; Console.WriteLine(i); } public static void Ref(ref int i) { Console.WriteLine(i); i=200; Console.WriteLine(i); } public static void Out(out int i) { //Console.WriteLine(i); //Error Unsigned Ref i=300; Console.WriteLine(i); } } class Program { static void Main(string[] args) { int i = 1; InOutRef.In(i); //passed by value (in only) Debug.Assert(i==1); InOutRef.Ref(ref i); //passed by ref (in or out) Debug.Assert(i == 200); InOutRef.Out(out i); //passed by as out ref (out only) Debug.Assert(i == 300); } } } </code></pre> I can't be any more literal on my answer. The code will not remember reference chanages such as the classic Java swap <a href="https://stackoverflow.com/questions/1363186/is-it-possible-to-write-swap-method-in-java">question</a> when using in. However, when using ref, it will be similar to VB.NET as it will remember the changes in and out. If you use the out parameter it means that it must be declared before you return (this is enforced by the compiler). <pre> Output: 1 //1 from main 100 //100 from in 1 //1 is NOT remembered from In 200 //200 from ref //should be 200 here but out enforces out param (not printed because commented out) 300 //300 is out only Press any key to continue . . . </pre>
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1. This table or related slice is empty.
PostParentId
1. POUse of 'ref' keyword in C#
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1. PTAnswer
UserLastEditorUserId
1. USCommunity
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1. This table or related slice is empty.
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