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When should I use @classmethod and when def method(self)?
...ou understand how classmethods work.
The why is that these methods can be called both on an instance OR on the class (in both cases, the class object will be passed as the first argument):
class Dummy(object):
@classmethod
def some_function(cls,*args,**kwargs):
print cls
#both of...
How can I check if a value is a json object?
...parse the json twice (once inside the try catch, and once in the code that calls the function.)
– Michiel Cornille
Mar 31 '15 at 8:36
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Wait for a process to finish
... other way to detect if the process is running to replace the kill -0 $pid call. On Linux, test -d "/proc/$pid" works, on other systems you might have to use pgrep (if available) or something like ps | grep "^$pid ".
share
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How can I find unused images and CSS styles in a website? [closed]
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The mirror wget option is a good way to automatically prune un-referenced and unused files, i.e. wget -m <your site>. The style sheets should be pruned from unused selectors first though - this looks like a good candidate for automatic that task: developers.google.co...
Is there a wikipedia API just for retrieve content summary?
... It is very recommendable to use &redirects=1 which redirects automatically to content of synonyms
– joecks
Feb 13 '16 at 14:42
8
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Introducing FOREIGN KEY constraint may cause cycles or multiple cascade paths - why?
...ou forgot the builder _ .Entity<TEntity>() _ before HasOne() can be called...
– ViRuSTriNiTy
May 18 at 13:51
1
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How to get the error message from the error code returned by GetLastError()?
After a Windows API call, how can I get the last error message in a textual form?
11 Answers
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How to install trusted CA certificate on Android device?
...cates on different versions of Android devices (among other devices).
Basically you'll need to:
Download: the cacerts.bks file from your phone.
adb pull /system/etc/security/cacerts.bks cacerts.bks
Download the .crt file from the certifying authority you want to allow.
Modify the cacerts.bks fil...
Why do you have to call .items() when iterating over a dictionary in Python?
Why do you have to call items() to iterate over key, value pairs in a dictionary? ie.
2 Answers
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Why is it bad practice to call System.gc()?
...aring a 1.5GB HashMap) with System.gc() , I was told it's bad practice to call System.gc() manually, but the comments were not entirely convincing. In addition, no one seemed to dare to upvote, nor downvote my answer.
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