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Mongoose indexing in production code
...x calls will simply see that the index already exists and then return. So it only has an effect on performance when you're first creating the index, and at that time the collections are often empty so creating an index would be quick anyway.
My suggestion is to leave autoIndex enabled unless you h...
How do you add an in-app purchase to an iOS application?
... Objective-C code to Swift.
Objective-C Users
The rest of this answer is written in Objective-C
App Store Connect
Go to appstoreconnect.apple.com and log in
Click My Apps then click the app you want do add the purchase to
Click the Features header, and then select In-App Purchases on the left
Click...
Count how many files in directory PHP
...
You can simply do the following :
$fi = new FilesystemIterator(__DIR__, FilesystemIterator::SKIP_DOTS);
printf("There were %d Files", iterator_count($fi));
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Using OpenGl with C#? [closed]
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OpenTK is an improvement over the Tao API, as it uses idiomatic C# style with overloading, strongly-typed enums, exceptions, and standard .NET types:
GL.Begin(BeginMode.Points);
GL.Color3(Color.Yellow);
GL.Vertex3(Vector3.Up);
as opposed to Tao which merely mirrors the ...
What is the easiest/best/most correct way to iterate through the characters of a string in Java?
StringTokenizer ? Convert the String to a char[] and iterate over that? Something else?
15 Answers
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Fastest way to count exact number of rows in a very large table?
...of scope
Notes:
COUNT(1) = COUNT(*) = COUNT(PrimaryKey) just in case
Edit:
SQL Server example (1.4 billion rows, 12 columns)
SELECT COUNT(*) FROM MyBigtable WITH (NOLOCK)
-- NOLOCK here is for me only to let me test for this answer: no more, no less
1 runs, 5:46 minutes, count = 1,401,659,70...
Best way to define error codes/strings in Java?
I am writing a web service in Java, and I am trying to figure out the best way to define error codes and their associated error strings . I need to have a numerical error code and an error string grouped together. Both the error code and error string will be sent to the client accessing the web ser...
The project type is not supported by this installation
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edit please see the answer further down, which is about 18 months newer, and actually solves the problem. This historically once-accurate answer is no longer as accurate. Leaving intact after the break for this reason. - thanks...
Why doesn't height: 100% work to expand divs to the screen height?
... to expand to the height of the entire screen. I haven't an idea as to why it's not succeeding. To see the page you can go here .
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Functional design patterns [closed]
...icle where they're summarized in one place (there is Typeclassopedia but it has a lot of areas that aren't covered well). Can anyone recommend an article/book which covers them well in one place and which can be accessible to a programmer with intermediate skills in FP?
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