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When do I need to use Begin / End Blocks and the Go keyword in SQL Server?
... the following lines. It doesn't "see" the symbol until it encounters a GO token which tells it to execute the preceding SQL since the last GO, at which point the symbol is applied to the database and becomes visible to the parser.
Why it doesn't just treat the semi-colon as a semantic break and ap...
Command to get nth line of STDOUT
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Using sed, just for variety:
ls -l | sed -n 2p
Using this alternative, which looks more efficient since it stops reading the input when the required line is printed, may generate a SIGPIPE in the feeding process, which may in turn generate an unwanted error message:
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C# List of objects, how do I get the sum of a property
I have a list of objects. One property of the individual object entry is amount. How do I get the sum of amount?
4 Answers
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Batch script: how to check for admin rights
...put, you need to do the following: setlocal enabledelayedexpansion for /f "tokens=* delims=" %%s in ('sfc 2^>^&1^|MORE') do @set "output=!output!%%s" echo "%output%"|findstr /I /C:"/scannow">nul 2>&1 (3 separate lines). This should work on Windows 2000 through Windows 2012 R2. On a ...
Using module 'subprocess' with timeout
Here's the Python code to run an arbitrary command returning its stdout data, or raise an exception on non-zero exit codes:
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Prevent text selection after double click
I'm handling the dblclick event on a span in my web app. A side-effect is that the double click selects text on the page. How can I prevent this selection from happening?
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What are “named tuples” in Python?
Reading the changes in Python 3.1 , I found something... unexpected:
11 Answers
11
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Removing elements by class name?
...e so:
$('.column').remove();
Otherwise, you're going to need to use the parent of each element to remove it:
element.parentNode.removeChild(element);
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Immutability of Strings in Java
Consider the following example.
26 Answers
26
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How to loop through all the properties of a class?
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Use Reflection:
Type type = obj.GetType();
PropertyInfo[] properties = type.GetProperties();
foreach (PropertyInfo property in properties)
{
Console.WriteLine("Name: " + property.Name + ", Value: " + property.GetValue(obj, null));
}
for...