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SQL to find the number of distinct values in a column
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can you expand this example to distinct on multiple columns?
– eugene
Mar 5 '15 at 6:41
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C# Passing Function as Argument [duplicate]
...s mentioned above works but there are also delegates that do the same task and also define intent within the naming:
public delegate double MyFunction(double x);
public double Diff(double x, MyFunction f)
{
double h = 0.0000001;
return (f(x + h) - f(x)) / h;
}
public double MyFunctionMet...
How do I count unique values inside a list
So I'm trying to make this program that will ask the user for input and store the values in an array / list.
Then when a blank line is entered it will tell the user how many of those values are unique.
I'm building this for real life reasons and not as a problem set.
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Python truncate a long string
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Even shorter :
info = data[:75] + (data[75:] and '..')
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Options for HTML scraping? [closed]
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combine linq with it and it seems more like HTMLSQL, no?
– Bless Yahu
Nov 22 '08 at 20:16
3
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How do you create a dictionary in Java? [closed]
...o implement a dictionary (as in the physical book). I have a list of words and their meanings.
4 Answers
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Where does System.Diagnostics.Debug.Write output appear?
...built with csc hello.cs ) prints just Hello via Console! on the console and Hello via OutputDebugString in the DebugView window. However, I cannot see either of the System.Diagnostics.* calls. Why is that?
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sh: 0: getcwd() failed: No such file or directory on cited drive
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This error is usually caused by running a command from a directory that no longer exist.
Try changing your directory and re-run the command.
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Go to Matching Brace in Visual Studio?
...Visual Studio:
Put your cursor before or after the brace (your choice) and then press CTRL + ]. It works with parentheses ( ), brackets [ ] and braces { }. From now on you don’t need to play Where’s Waldo? to find that brace.
On MacOS, use CMD + SHIFT + \
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How to create a self-signed certificate with OpenSSL
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You can do that in one command:
openssl req -x509 -newkey rsa:4096 -keyout key.pem -out cert.pem -days 365
You can also add -nodes (short for no DES) if you don't want to protect your private key with a passphrase. Otherwise it will prompt you for "...