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What is the correct way to create a single-instance WPF application?

... [DllImport("user32")] public static extern int RegisterWindowMessage(string message); } Form1.cs (front side partial) public partial class Form1 : Form { public Form1() { InitializeComponent(); } protected override void WndProc(ref Message m) { ...
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'Operation is not valid due to the current state of the object' error during postback

...tem.Web.Script.Serialization.JavaScriptObjectDeserializer.BasicDeserialize(String input, Int32 depthLimit, JavaScriptSerializer serializer) at System.Web.Script.Serialization.JavaScriptSerializer.Deserialize(JavaScriptSerializer serializer, String input, Type type, Int32 depthLimit) at Syste...
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为AppInventor2开发拓展(Extension) · App Inventor 2 中文网

...nentContainer container; private Context context; private static final String LOG_TAG = "CB"; private boolean suppressToast; public Clipboard(ComponentContainer container) { super(container.$form()); this.container = container; context = (Context) container.$context(); Log....
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TSQL - How to use GO inside of a BEGIN .. END block?

...ecutesql, splitting the contents between each GO statement into a separate string to be executed, as demonstrated in the example below. Also, there is a @statementNo variable to track which statement is being executed for easy debugging where an exception occurred. The line numbers will be relati...
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How to use ArrayAdapter

...ut has only one TextView // do whatever you want with your string and long viewHolder.itemView.setText(String.format("%s %d", item.reason, item.long_val)); } return convertView; } } For those not very familiar with the Android framework, this is exp...
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PHP cURL custom headers

... Spoofing the user agent string sounds like a bad idea to me. Here is what the HTTP spec says. – starbeamrainbowlabs Sep 13 '16 at 10:30 ...
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Incrementing a date in JavaScript

...Date(2015, 11, 31); snippet.log("Last day of 2015: " + lastDayOf2015.toISOString()); var nextDay = new Date(+lastDayOf2015); var dateValue = nextDay.getDate() + 1; snippet.log("Setting the 'date' part to " + dateValue); nextDay.setDate(dateValue); snippet.log("Resulting date: " + nextDay.toISO...
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How do you test functions and closures for equality?

...hashable object. Like: var handler:Handler = Handler(callback: { (message:String) in //handler body })) share | improve this answer | follow | ...
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Recreating a Dictionary from an IEnumerable

I have a method that returns an IEnumerable<KeyValuePair<string, ArrayList>> , but some of the callers require the result of the method to be a dictionary. How can I convert the IEnumerable<KeyValuePair<string, ArrayList>> into a Dictionary<string, ArrayList> so th...
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What does $$ (dollar dollar or double dollar) mean in PHP?

... The inner $ resolves the a variable to a string, and the outer one resolves a variable by that string. So, consider this example $inner = "foo"; $outer = "inner"; The variable: $$outer would equal the string "foo" ...