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Wait until file is unlocked in .NET

...; /// <param name="fullPath"></param> bool WaitForFile(string fullPath) { int numTries = 0; while (true) { ++numTries; try { // Attempt to open the file exclusively. using (FileStream ...
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How to create a temporary directory/folder in Java?

...tion { final File temp; temp = File.createTempFile("temp", Long.toString(System.nanoTime())); if(!(temp.delete())) { throw new IOException("Could not delete temp file: " + temp.getAbsolutePath()); } if(!(temp.mkdir())) { throw new IOException("Could not...
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MySQL combine two columns into one column

... The SQL standard provides the CONCAT() function to concatenate two strings into a single string. SQLite, however, does not support the CONCAT() function. Instead, it uses the concatenate operator (||) to join two strings into one. – PaulH Oct 28 '19 at ...
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How to get maximum value from the Collection (for example ArrayList)?

...lections.min() method. public class MaxList { public static void main(String[] args) { List l = new ArrayList(); l.add(1); l.add(2); l.add(3); l.add(4); l.add(5); System.out.println(Collections.max(l)); // 5 System.out.println(Coll...
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INSERT with SELECT

... 22 and '22' should not matter to sql, but I put a string in case that the field is similar to an unique identifier. – Dumitrescu Bogdan Mar 22 '11 at 12:54 ...
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C# switch on type [duplicate]

...something along these lines could help // nasty.. switch(MyObj.GetType.ToString()){ case "Type1": etc } // clumsy... if myObj is Type1 then if myObj is Type2 then etc. share | improve this ...
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How to get a group of toggle buttons to act like radio buttons in WPF?

... If a add content other then a simple string i get a "Element is already the child of another element." error. Is there a way arround this? – Tobias Hoefer Jul 21 '15 at 12:49 ...
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Further understanding setRetainInstance(true)

...tribute with a unique ID. Supply the android:tag attribute with a unique string. If you provide neither of the previous two, the system uses the ID of the container view. This strongly implies that if you do setContentView(R.layout.whatever) in Activity.onCreated() and that layout contains ...
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REST API Authentication

...every HTTP request, eg: Authorization: Basic Ym9ic2Vzc2lvbjE6czNjcmV0 The string Ym9ic2Vzc2lvbjE6czNjcmV0 above is just the string "bobsession1:s3cret" (which is a username/password) encoded in Base64. To obtain the temporary session token above, provide an API function (eg: http://mycompany.com/ap...
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再说WCF Data Contract KnownTypeAttribute - 更多技术 - 清泛网移动版 - 专注C/C++及内核技术

... { ...... } [DataMember] public string AddressCategory { get; set; } [DataMember] public string AddressTitle { get; set; } [DataMember] public string AddressDetail { get; set; } } [DataContract] pu...