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How to find the size of an array in postgresql
...e trick. Or if you know that the array is 1-dimensional (which is likely) and are running PostgreSQL 9.4 or higher, you can use cardinality:
SELECT cardinality(id) FROM example;
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What is the explicit promise construction antipattern and how do I avoid it?
...ls to utilize the fact that promises chain.
Promises can chain with .then and you can return promises directly. Your code in getStuffDone can be rewritten as:
function getStuffDone(param){
return myPromiseFn(param+1); // much nicer, right?
}
Promises are all about making asynchronous code mo...
The type or namespace name 'DbContext' could not be found [closed]
I am VERY new to ASP.NET MVC (3) and am having a hard time resolving a build error in Visual Studio:
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Google Maps API v3: How do I dynamically change the marker icon?
... you asking about the actual way to do it? You could just create each div, and a add a mouseover and mouseout listener that would change the icon and back for the markers.
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Example images for code and mark-up Q&As [closed]
... in this answer. It includes a Java based interface that defines the URLs and makes them easy to access.
Details: 32x32 pixel PNG (4 colors x 5 shapes) with partial transparency (along the edges).
Categories: png icons
Sprite...
What is the 'CLSCompliant' attribute in .NET?
...ublic members. However they can be used with private members.
Class names and member names should not differ only based on their case. For example we cannot have two methods named MyMethod and MYMETHOD.
Only properties and methods may be overloaded, operators should not be overloaded.
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Preserve line endings
I run sed to do some substitution on windows and I noticed that it automatically converts line endings to Unix (\n). Is there an option to tell sed to use Windows line endings (\r\n) or even better to preserve the line endings from the file?
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What's the difference between == and .equals in Scala?
What is the difference between == and .equals() in Scala, and when to use which?
5 Answers
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How do I shuffle an array in Swift?
How do I randomize or shuffle the elements within an array in Swift? For example, if my array consists of 52 playing cards, I want to shuffle the array in order to shuffle the deck.
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Control the size of points in an R scatterplot?
...ance of the points in the plot. I'm making scatterplots with tens of thousands of points and prefer a small, but not too small dot. Basically, I find pch='.' to be too small, but pch=19 to be too fat. Is there something in the middle or some way to scale the dots down somehow?
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