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How to check whether a string contains a substring in Ruby
...oMethodError: undefined method `include?' for nil:NilClass should always convert the value being included to the expected value:- test.to_s.include?("test")
– Gary
May 8 '18 at 21:24
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Paste text on Android Emulator
... number)
This works really well for links as the message is automatically converted into a hyperlink which you can click without having to copy / paste it into the browser.
Once the emulator receives the message you can copy it and paste it wherever you like.
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How to handle Back button with in the dialog?
... an application that when the button is pressed, it opens a dialog with OK and Cancel buttons.
8 Answers
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Outlook autocleaning my line breaks and screwing up my email format
... in 2008 when that answer was posted. Here is a little c# snippet to help convert the body and send the message in HTML format:
body = string.Format("<font face='calibri,arial,sans-serif'>{0}<font/>", body.Replace("\r\n", "<br>"));
using (var smtpClient = new SmtpClient() { Hos...
The way to check a HDFS directory's size?
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Prior to 0.20.203, and officially deprecated in 2.6.0:
hadoop fs -dus [directory]
Since 0.20.203 (dead link) 1.0.4 and still compatible through 2.6.0:
hdfs dfs -du [-s] [-h] URI [URI …]
You can also run hadoop fs -help for more info and...
Service vs IntentService in the Android platform
... can be done with an IntentService that cannot be done with a Service (and vice-versa)?
11 Answers
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throw checked Exceptions from mocks with Mockito
...rovide for a checked Exception to be thrown from the get(int index) method and that is why Mockito is failing.
When you create the mocked List, Mockito will use the definition of List.class to creates its mock.
The behavior you are specifying with the when(list.get(0)).thenThrow(new SomeException...
Pandas DataFrame Groupby two columns and get counts
I have a pandas dataframe in the following format:
6 Answers
6
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C# version of java's synchronized keyword?
...: only apply thread-safety when you know you actually are going to use it (and test it).
For the method-level stuff, there is [MethodImpl]:
[MethodImpl(MethodImplOptions.Synchronized)]
public void SomeMethod() {/* code */}
This can also be used on accessors (properties and events):
private int ...
Java serialization: readObject() vs. readResolve()
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When serialization is used to convert an object so that it can be saved in file, we can trigger a method, readResolve(). The method is private and is kept in the same class whose object is being retrieved while deserialization.
It ensures that after the d...