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Throw HttpResponseException or return Request.CreateErrorResponse?
... // If no exception handler registered for the exception type, fallback to default handler
actionExecutedContext.Response = DefaultHandler(
actionExecutedContext.Exception.GetBaseException(), actionExecutedContext.Request
);
...
Pimpl idiom vs Pure virtual class interface
...by "value". Often, doesn't make sense to "copy" instances of the class at all. When it does make sense, a polymorphic "Clone" method is usually more appropriate. Examples: A Socket class, a Database class, a "policy" class, anything that would be a "closure" in a functional language.
Both pImpl ...
What is “entropy and information gain”?
...: female
| | ends-vowel=0: male
length>=7
| length=5: male
basically each node represent a test performed on a single attribute, and we go left or right depending on the result of the test. We keep traversing the tree until we reach a leaf node which contains the class prediction (m or f)...
What characters are forbidden in Windows and Linux directory names?
...ot create a folder named A if one named a already exists. Worse, seemingly-allowed names like PRN and CON, and many others, are reserved and not allowed. Windows also has several length restrictions; a filename valid in one folder may become invalid if moved to another folder. The rules for
naming f...
Java - get pixel array from image
... is to be able to address pixel (x, y) from the image using int[x][y] . All the methods I have found do not do this (most of them return int[] s).
...
How to set cookie in node js using express framework?
...important!
});
// let static middleware do its job
app.use(express.static(__dirname + '/public'));
Also, middleware needs to either end a request (by sending back a response), or pass the request to the next middleware. In this case, I've done the latter by calling next() when the cookie has been...
Determine device (iPhone, iPod Touch) with iOS
...
@AnilSivadas: UI_USER_INTERFACE_IDIOM() is safe to use in apps that still support iOS < 3.2: it is a macro in UIDevice.h specifically written to default to UIUserInterfaceIdiomPhone on such older iOS versions.
– mkle...
How to get an MD5 checksum in PowerShell
...h = [System.BitConverter]::ToString($md5.ComputeHash([System.IO.File]::ReadAllBytes($someFilePath)))
Starting in PowerShell version 4, this is easy to do for files out of the box with the Get-FileHash cmdlet:
Get-FileHash <filepath> -Algorithm MD5
This is certainly preferable since it a...
Launch Bootstrap Modal on page load
I don't know javascript at all. The bootstrap documentation says to
18 Answers
18
...
What is the difference between HAVING and WHERE in SQL?
...nt(1)
From Address
Where State = 'MA'
Group By City
Gives you a table of all cities in MA and the number of addresses in each city.
This code:
select City, CNT=Count(1)
From Address
Where State = 'MA'
Group By City
Having Count(1)>5
Gives you a table of cities in MA with more than 5 address...