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/*++ BUILD Version: 0073     Increment this if a change has global effects

Copyright (c) Microsoft Corporation. All rights reserved.

Module Name:

    winnt.h

Abstract:

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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key>author</key>
	<string>Chris Thomas</string>
	<key>name</key>
	<string>Mac Classic</string>
	<key>settings</key>
	<array>

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public static string InsertNewLine(string source, int len = 76)
{
	var sb = new StringBuilder(source.Length + (int)(source.Length / len) + 1);
	var start = 0;
	while ((start + len) < source.Length)
	{
		sb.Append(source.Substring(start, len));
		sb.Append(Environment.NewLine);
		start += len;
	}

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public static class Extensions
{
    public static void AddRange<T>(this ObservableCollection<T> oc, IEnumerable<T> collection)
    {
        if (collection == null)
        {
            throw new ArgumentNullException("collection");
        }
        collection.ToList().ForEach( oc.Add);
    }

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//enter键转tab键：
private void EnterKey_To_TabKey(object sender, KeyEventArgs e)
{
    if (e.Key == Key.Enter)
    {
        TraversalRequest request = new TraversalRequest(FocusNavigationDirection.Next);
        ((FrameworkElement)sender).MoveFocus(request);
    }
}

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DROP PROCEDURE IF EXISTS demo;
CREATE PROCEDURE demo()
BEGIN
	DECLARE EXIT HANDLER FOR SQLWARNING,NOT FOUND,SQLEXCEPTION 
	BEGIN
		set @o_ret=-1; 
		SELECT -2;
		ROLLBACK;
	END;
	START TRANSACTION;		

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var input = "PQR";
DataTable dt = new DataTable();
dt.Columns.Add("PId", typeof(Int32));
dt.Columns.Add("PName", typeof(string));
dt.Columns.Add("Qty", typeof(Int32));
dt.Rows.Add(123, "XYZ", 2);
dt.Rows.Add(223, "ABC", 4);
dt.Rows.Add(434, "PQR", 33);

var stkLists = dt.AsEnumerable().ToList();

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<TextBlock Text="Hello">
      <TextBlock.Style>
        <Style TargetType="TextBlock">
          <Setter Property="Foreground" Value="Blue"></Setter>
          <Style.Triggers>
            <Trigger Property="IsMouseOver" Value="True">
              <Setter Property="Foreground" Value="Red" />
              <Setter Property="TextDecorations" Value="Underline" />
            </Trigger>
            <DataTrigger Binding="{Binding RelativeSource={RelativeSource Self},Path=Text}" Value="Hello">

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; This is part of my AutoHotKey [1] script. When you are in Windows Explorer it
; allows you to press Ctrl+Alt+N and type a filename, and that file is created
; in the current directory and opened in the appropriate editor (usually
; [gVim](http://www.vim.org/) in my case, but it will use whatever program is
; associated with the file in Windows Explorer).

; This is much easier than the alternative that I have been using until now:
; Right click > New > Text file, delete default filename and extension (which
; isn't highlighted in Windows 7), type the filename, press enter twice.
; (Particularly for creating dot files like ".htaccess".)

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Latency Comparison Numbers
--------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD