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Checkstyle vs. PMD
... using Maven2 so Checkstyle and PMD integration come for free. However it looks like there is a large overlap in functionality between these two tools, in terms of enforcing basic style rules.
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How do I apply a perspective transform to a UIView?
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As Ben said, you'll need to work with the UIView's layer, using a CATransform3D to perform the layer's rotation. The trick to get perspective working, as described here, is to directly access one of the matrix cells of the CATransform3D (m34). Matrix math h...
How do I prevent Eclipse from hanging on startup?
...sue, but in my case, I tracked the files that Eclipse was polling against with SysInternals Procmon, and found that Eclipse was constantly polling a fairly large snapshot file for one of my projects. Removed that, and everything started up fine (albeit with the workspace in the state it was at the ...
Set up a scheduled job?
...ing something like Celery, mentioned in the other answers. In particular, with Celery it is nice to not have to spread your application logic out into crontab files. However the cron solution works quite nicely for a small to medium sized application and where you don't want a lot of external depend...
Use of *args and **kwargs [duplicate]
So I have difficulty with the concept of *args and **kwargs .
11 Answers
11
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Random string generation with upper case letters and digits
...wer in one line:
''.join(random.choice(string.ascii_uppercase + string.digits) for _ in range(N))
or even shorter starting with Python 3.6 using random.choices():
''.join(random.choices(string.ascii_uppercase + string.digits, k=N))
A cryptographically more secure version; see https://stackover...
Guava: Why is there no Lists.filter() function?
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It wasn't implemented because it would expose a perilous large number of slow methods, such as #get(index) on the returned List view (inviting performance bugs). And ListIterator would be a pain to implement as well (though I...
Put content in HttpResponseMessage object?
...simply pass a data type into the constructor, and then return the message with that data, but not anymore.
8 Answers
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Ideal Ruby project structure
...al project structure for a ruby (non-rails/merb/etc) project. I'm guessing it follows
4 Answers
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How to get Vim to highlight non-ascii characters?
...ange up to \xFF instead of \x7F using /[^\x00-\xFF].
You may also express it in decimal via \d:
/[^\d0-\d127]
If you need something more specific, like exclusion of non-printable characters, you will need to add those ranges into the character class [].
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