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How do I use itertools.groupby()?
I haven't been able to find an understandable explanation of how to actually use Python's itertools.groupby() function. What I'm trying to do is this:
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How to output a multiline string in Bash?
How can I output a multipline string in Bash without using multiple echo calls like so:
7 Answers
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Android: How can I validate EditText input?
I need to do form input validation on a series of EditTexts. I'm using OnFocusChangeListeners to trigger the validation after the user types into each one, but this doesn't behave as desired for the last EditText.
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How do I display the current value of an Android Preference in the Preference summary?
This must come up very often.
34 Answers
34
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When and why JPA entities should implement Serializable interface?
... be deserialized and activated (assuming they have not expired in the mean time) when the application reload is completed.
In order to successfully restore the state of session attributes, all such attributes MUST implement the java.io.Serializable interface.
So, if the entity is stored in the Http...
adding header to python requests module
Earlier I used httplib module to add a header in the request. Now I am trying the same thing with the requests module.
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Using awk to print all columns from the nth to the last
This line worked until I had whitespace in the second field.
24 Answers
24
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How to insert a text at the beginning of a file?
So far I've been able to find how to add a line at the beginning of a file but that's not exactly what I want. I'll show it on a example
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OS detecting makefile
I routinely work on several different computers and several different operating systems, which are Mac OS X, Linux, or Solaris. For the project I'm working on, I pull my code from a remote git repository.
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In Javascript, how to conditionally add a member to an object?
... @Andrew, that answer requires ES6, which did not exist at the time I wrote mine.
– Frédéric Hamidi
Nov 24 '16 at 17:00
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