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$dir = dir *.zip
#go through each zip file in the directory variable
foreach($item in $dir)
    {
        Expand-Archive -Path $item -DestinationPath ($item -replace '.zip','') -Force
    }
    
/* unzip all files in a directory and then do some work!! */

evanricard

   private static string GetXmlValue(string id, string getData, XDocument xdoc)
        {
            return xdoc.Root.Descendants("girl").Elements().
                Where(node => node.Name == "id" && node.Value == id).
                Single<XElement>().NodesAfterSelf().
                Where(values => ((XElement)values).Name == getData).
                Cast<XElement>().Single<XElement>().Value;
        }

evanricard

   class Team<T> : IEnumerable<T> // enumerable collection
    {
        private T[] workers;
        private const byte DEFAULTSIZE = 5;
        public Team() {
            this.workers = new T[DEFAULTSIZE];
        }

        private int i = 0;
        public void Add(T param)

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static void DuffsDevice(uint count, int[] A, int[] B)
    {
        uint i = 0;
        uint n = (count + 7) / 8;
        switch (count % 8) {
            case 0: A[i] = B[i++]; goto case 7;
            case 7: A[i] = B[i++]; goto case 6;
            case 6: A[i] = B[i++]; goto case 5;
            case 5: A[i] = B[i++]; goto case 4;
            case 4: A[i] = B[i++]; goto case 3;

evanricard

 &array[0]
 
 
    [DllImport("kernel32", SetLastError = true)]
    static extern unsafe IntPtr CreateFile(
            string FileName,         
            uint DesiredAccess,       
            uint ShareMode,           
            uint SecurityAttributes,  
            uint CreationDisposition, 

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static void Main()
    {
        var store = new NumberStore();
        WriteLine($"Исходная последовательность: {store.ToString()}");

        ref var value = ref store.FindNumber(16);
        value *= 2;
        WriteLine($"Новая последовательность:    {store.ToString()}");
        //: 1 3 7 15 31 63 127 255 511 1023
        //:    1 3 7 15 62 63 127 255 511 1023

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public class Example : IDisposable
    {
        private IntPtr buffer;         // неуправляемый буфер памяти
        private SafeHandle resource;   // управляемый ресурс
        public Example()               // конструктор
        {
            this.buffer = ...
            this.resource = ...
        }

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void M(int x, int y) { }
void M<T>(T y, int x) { }

void M2()
{
    M(3, 4);
    M(y: 3, x: 4); // Invokes M(int, int)
    M(y: 3, 4); // Invokes M<T>(T, int)
}

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Application app = new Application { Visible = true };
Document doc = app.Documents.Add*(;
Paragraph para = doc.Paragraphs.Add();
para.Range.Text = "Simple new code";

doc.SaveAs2<-->(FileName: "demo2.docx");
doc.Close();

app.Application.Quit();

evanricard

Dynamic typing supports custom behavior via IDynamicMetaObjectProvider and the DynamicObject class
Dynamic typing is implemented with both compiler and framework features. The framework optimizes and caches for efficiency.