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Android. Fragment getActivity() sometimes returns null
In developer console error reports sometimes I see reports with NPE issue. I do not understand what is wrong with my code. On emulator and my device application works good without forcecloses, however some users get NullPointerException in fragment class when the getActivity() method is called.
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More elegant “ps aux | grep -v grep”
When I check list of processes and 'grep' out those that are interesting for me, the grep itself is also included in the results. For example, to list terminals:
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How to kill all processes with a given partial name? [closed]
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Use pkill -f, which matches the pattern for any part of the command line
pkill -f my_pattern
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How do I combine two data frames?
I'm using Pandas data frames. I have a initial data frame, say D . I extract two data frames from it like this:
6 Answers
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trying to animate a constraint in swift
...ield that I want to enlarge its width when tapped on. I set up the constraints and made sure the constraint on the left has the lower priority then the one that I am trying to animate on the right side.
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Rendering HTML inside textarea
I need to be able to render some HTML tags inside a textarea (namely , , , ) but textareas only interpret their content as text. Is there an easy way of doing it without relying on external libraries/plugins (I'm using jQuery)?
If not, do you know of any jQuery plugin I could use to do this?
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Implementing IDisposable correctly
In my classes I implement IDisposable as follows:
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Using an HTML button to call a JavaScript function
I am trying to use an HTML button to call a JavaScript function.
10 Answers
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Spring @Transaction method call by the method within the same class, does not work?
I am new to Spring Transaction. Something that I found really odd, probably I did understand this properly.
8 Answers
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Struct Constructor in C++?
Can a struct have a constructor in C++?
16 Answers
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