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LINQ to Entities only supports casting EDM primitive or enumeration types with IEntity interface
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Perfect, it's great being able to perform Interface-based queries and still maintain the collection as IQueryable. A bit annoying however that there is basically no way of thinking up this fix, without knowing the inner workings of EF.
– An...
How do I use the new computeIfAbsent function?
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Detect 7 inch and 10 inch tablet programmatically
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You can use the DisplayMetrics to get a whole bunch of information about the screen that your app is running on.
First, we create a DisplayMetrics metrics object:
DisplayMetrics metrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(metrics);
From thi...
How do I get the current date and time in PHP?
...his would return the date in the following formats respectively:
$date = '2012-03-06 17:33:07';
// Or
$date = '2012/03/06 17:33:07';
/**
* This time is based on the default server time zone.
* If you want the date in a different time zone,
* say if you come from Nairobi, Kenya like I do, you ca...
String concatenation: concat() vs “+” operator
..., with more strings the StringBuilder method wins, at least in terms of performance.
The source code of String and StringBuilder (and its package-private base class) is available in src.zip of the Sun JDK. You can see that you are building up a char array (resizing as necessary) and then throwing i...
What is opinionated software?
...with altCognito. .NET encourages the developer to mix Model and View in WinForms apps by making it brain-dead easy to put business logic in methods generated by the button click event, for example. In this way, Microsoft indirectly encourages short-sighted developers to lock their code in to their f...
Convert a String In C++ To Upper Case
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This appears to perform extremely badly with g++ 5.2 -O3, and Boost 1.58 (like 30x worse than calling glibc's toupper in a loop.) There's a dynamic_cast of the locale that doesn't get hoisted out of the per-char loop. See my answer. On the p...
What is the most efficient Java Collections library? [closed]
...tions in the JDK.
Personally (and I'm biased) I love Guava (including the former Google Java Collections project). It makes various tasks (including collections) a lot easier, in a way which is at least reasonably efficient. Given that collection operations rarely form a bottleneck in my code (in m...
How do I format a string using a dictionary in python-3.x?
...erator.
– abhisekp
Apr 15 '17 at 12:01
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CSS selector for a checked radio button's label
...t gets too complicated really quick. I want to use the browser's built in form+css functionality because it will work every time.
– Stephen
Sep 16 '09 at 9:20
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