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Sort array of objects by object fields
...>name, $b->name);
}
usort($your_data, "cmp");
You can also use any callable as the second argument. Here are some examples:
Using anonymous functions (from PHP 5.3)
usort($your_data, function($a, $b) {return strcmp($a->name, $b->name);});
From inside a class
usort($your_data, ar...
TypeError: 'str' does not support the buffer interface
... fundamental problem with double-duty classes. Which version of any method call do you implement?
The good news then is that py3 fixes this problem. It disentangles the str and bytes classes. The str class has string-like methods, the separate bytes class has byte array methods:
py3>> len('...
ASP.NET MVC: Unit testing controllers that use UrlHelper
One of my controllers actions, one that is being called in an Ajax request, is returning an URL to the client side so it can do a redirection. I'm using Url.RouteUrl(..) and during my unit tests this fails since the Controller.Url parameter is not pre-filled.
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Javascript callback when IFRAME is finished loading?
I need to execute a callback when an IFRAME has finished loading. I have no control over the content in the IFRAME, so I can't fire the callback from there.
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What are fixtures in programming?
...nment in which tests are run so that results are
repeatable. Some people call this the test context.
Examples of fixtures:
Loading a database with a specific, known set of data
Erasing a hard disk and installing a known clean operating system installation
Copying a specific known ...
What is the difference between '&' and ',' in Java generics?
...xtends MyClass , Serializable>
This declares two type parameters, one called T (which must extend MyClass) and one called Serializable (which hides java.io.Serializable — this is probably what the warning was about).
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function declaration isn't a prototype
... to indicate that a function takes no arguments. In C++, unless you specifically need your code to compile both as C and as C++, just use ().
– Keith Thompson
Dec 30 '13 at 16:50
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Right way to reverse pandas.DataFrame?
...ven[idx], data.Odd[idx])
You are getting an error because reversed first calls data.__len__() which returns 6. Then it tries to call data[j - 1] for j in range(6, 0, -1), and the first call would be data[5]; but in pandas dataframe data[5] means column 5, and there is no column 5 so it will throw ...
Send inline image in email
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Small comment: no need to call NewGuid(), the AttachmentBase class (which LinkedResource inherits from) already creates it if needed.
– Andrew
Aug 11 '17 at 21:14
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Can I have onScrollListener for a ScrollView?
...
Every instance of View calls getViewTreeObserver(). Now when holding an instance of ViewTreeObserver, you can add an OnScrollChangedListener() to it using the method addOnScrollChangedListener().
You can see more information about this class here....