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getActivity() returns null in Fragment function
...ed to its activity and from this point getActivity() will return non-null (nb there is also an onDetach() call).
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Calculating a directory's size using Python?
...o be used to get file size and other file related information.
import os
nbytes = sum(d.stat().st_size for d in os.scandir('.') if d.is_file())
Update 2018
If you use Python 3.4 or previous then you may consider using the more efficient walk method provided by the third-party scandir package. I...
When is “i += x” different from “i = i + x” in Python?
...lasses, and for types implemented in the C API it instead looks for either nb_inplace_add or sq_inplace_concat, and those C API functions have stricter requirements than the Python dunder methods, and… But I don't think that's relevant to the answer. The main distinction is that += tries to do an ...
How do I display the current value of an Android Preference in the Preference summary?
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NB: There is a simpler way, see @Robertas's answer.
– Salman von Abbas
Mar 9 '16 at 18:26
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Delete local Git branches after deleting them on the remote repo
...quick way
git branch --merged | grep -v "\*" | xargs -n 1 git branch -d
NB: if you're not on master, this has the potential to delete the branch. Keep reading for the "better way".
Make sure we keep master
You can ensure that master, or any other branch for that matter, doesn't get removed by g...
iReport not starting using JRE 8
...java 8).
all you have to do is edit C:\Program Files\Jaspersoft\iReport-nb-3.6.1\etc\ireport.conf:
# default location of JDK/JRE, can be overridden by using --jdkhome <dir> switch
jdkhome="C:/Program Files/Java/jdk1.7.0_45"
on linux (no spaces and standard file paths) its that much easie...
How to fallback to local stylesheet (not script) if CDN fails
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NB: you do not really have to add a new rule to the external CSS. Just use an existing rule whose behavior is known. In my demo I use ui-helper-hidden class which is supposed to hide the element, i then check if the element g...
Create MSI or setup project with Visual Studio 2012
...n of the installer from the Publish tab in the project properties window.
NB: This method only works for WPF & Windows Forms apps.
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How to repeat a string a variable number of times in C++?
... std::string(size_type count, CharT ch):
std::string(5, '.') + "lolcat"
NB. This can't be used to repeat multi-character strings.
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Font from origin has been blocked from loading by Cross-Origin Resource Sharing policy
...ng) and Firefox cross-domain font loading for the Amazon S3 CORS details.
NB in general because this used to apply to Firefox only, so it may help to search for Firefox rather than Chrome.
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