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How to convert an Array to a Set in Java
...s?
For JDK < 8, I would just write the obvious for loop to do the wrap and add-to-set in one pass.
For JDK >= 8, an attractive option is something like:
Arrays.stream(intArray).boxed().collect(Collectors.toSet());
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Remove ActiveRecord in Rails 3
...app I have just started work on in Rails 3 beta, both to get a feel for it and get a bit of a head-start. The app uses MongoDB and MongoMapper for all of its models and therefore has no need for ActiveRecord. In the previous version, I am unloading activerecord in the following way:
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Applying .gitignore to committed files
...ignore to match the ignored files, you can do git ls-files -ci --exclude-standard to see the files that are included in the exclude lists; you can then do
//On Linux:
git ls-files -ci --exclude-standard -z | xargs -0 git rm --cached
//On Windows:
for /F "tokens=*" %a in ('git ls-files -ci --exclud...
Android emulator-5554 offline
... order to be assured that your emulator starts working again :
Go to cmd and type adb kill-server
Go to task manager and find adb in processes. If you find one, right click on it and click on end process tree.
In eclipse, go to Window>Android Virtual Device Manager, click on the AVD you want t...
File being used by another process after using File.Create()
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The File.Create method creates the file and opens a FileStream on the file. So your file is already open. You don't really need the file.Create method at all:
string filePath = @"c:\somefilename.txt";
using (StreamWriter sw = new StreamWriter(filePath, true))
{
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Common use-cases for pickle in Python
I've looked at the pickle documentation, but I don't understand where pickle is useful.
9 Answers
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What is the difference between Google App Engine and Google Compute Engine?
...ine is a Platform-as-a-Service. It means that you simply deploy your code, and the platform does everything else for you. For example, if your app becomes very successful, App Engine will automatically create more instances to handle the increased volume.
Read more about App Engine
Compute Engine ...
Copying files from one directory to another in Java
...directory, dir, with text files. I iterate over the first 20 files in dir, and want to copy them to another directory in the dir directory, which I have created right before the iteration.
In the code, I want to copy the review (which represents the ith text file or review) to trainingDir . How c...
Is it possible to deserialize XML into List?
...> or <Items> node (if you did not have the XmlElement attribute), and then add <user> nodes under that. But I tried it and it did not, thus emitting exactly what the question wanted.
– Jon Kragh
Jul 26 '10 at 16:38
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How can I render a list select box (dropdown) with bootstrap?
...own list select box? That is, where the drop down box is a list of values and if selected populate the contents of the list box?
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