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Does .NET have a way to check if List a contains all items in List b?
... }
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This checks whether there are any elements in b which aren't in a - and then inverts the result.
Note that it would be slightly more conventional to make the method generic rather than the class, and there's no reason to require List<T> instead of IEnumerable<T> - so this would p...
How to install a specific version of a ruby gem?
Using the command-line gem tool, how can I install a specific version of a gem?
6 Answers
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Duplicate ID, tag null, or parent id with another fragment for com.google.android.gms.maps.MapFragme
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The answer Matt suggests works, but it cause the map to be recreated and redrawn, which isn't always desirable.
After lots of trial and error, I found a solution that works for me:
private static View view;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bund...
Android - SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
...it's caused by the 3rd party keyboard I am using. When I change it back to Android keyboard, the error entry does not show up any more.
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How does Duff's device work?
I've read the article on Wikipedia on the Duff's device , and I don't get it. I am really interested, but I've read the explanation there a couple of times and I still don't get it how the Duff's device works.
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How do I automatically update a timestamp in PostgreSQL
...the time of the actual current moment, (2) the time the statement started, and (3) the time the transaction started. The example shown here is start of current transaction. You may or may not want that as opposed to the other two possibilities.
– Basil Bourque
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Converting string to Date and DateTime
...YYY (for example, 10-16-2003), how do I properly convert that to a Date and then a DateTime in the format of YYYY-mm-dd ? The only reason I ask for both Date and DateTime is because I need one in one spot, and the other in a different spot.
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What does “xmlns” in XML mean?
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It defines an XML Namespace.
In your example, the Namespace Prefix is "android" and the Namespace URI is "http://schemas.android.com/apk/res/android"
In the document, you see elements like: <android:foo />
Think of the namespace prefix as a variable with a short name alias for the full n...
CSS3 box-sizing: margin-box; Why not?
...is highly browser-dependant. Probably around 2020 the ie15 will support it and you will be allowed to use that in your work, too :-(
– peterh - Reinstate Monica
Nov 25 '13 at 10:32
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Binary Data in JSON String. Something better than Base64
...this is only a 7% improvement over base64, it's more expensive to compute, and implementations are less common than for base64 so it's probably not a win.
You could also simply map every input byte to the corresponding character in U+0000-U+00FF, then do the minimum encoding required by the JSON st...