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ThreadStatic v.s. ThreadLocal: is generic better than attribute?
...s defined using attribute while ThreadLocal<T> uses generic.
Why different design solutions were chosen?
What are the advantages and disadvantages of using generic over attributes in this case?
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Does reading an entire file leave the file handle open?
If you read an entire file with content = open('Path/to/file', 'r').read() is the file handle left open until the script exits? Is there a more concise method to read a whole file?
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Hibernate problem - “Use of @OneToMany or @ManyToMany targeting an unmapped class”
...y. The former makes the entity detectable. The latter is just an addition.
if you are manually listing your entities (in persistence.xml, in hibernate.cfg.xml, or when configuring your session factory), then make sure you have also listed the ScopeTopic entity
make sure you don't have multiple Scope...
How to make a vertical line in HTML
...oo but separating them is handy as then you can easily adjust in one place if needed. Also putting it in a separate CSS file is better for performance as it can be cached by the browser and you end up transmitting less bytes over the wire each time you request the rendered HTML.
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ValueError: numpy.dtype has the wrong size, try recompiling
...ackage, that uses numpy in a compiled extension, is compiled against a specific version of numpy. Future version of numpy will be compatible with the compiled extension of the package (for exception see below).
Distributers of those other packages do not need to recompile their package against a new...
How do you determine what technology a website is built on? [closed]
...ation that is exposed the easier it might be for malicious parties to identify security vulnerabilities or denial of service holes.
If I was interested I'd probably look, in no particular order, at:
urls, and file extensions.
HTTP response headers
Source code for comments, or standard JS librarie...
Adding rounded corner and drop shadow to UICollectionViewCell
...ts on adding 2nd view for adding shadow, but I still cannot get it to work if I want to add it in UICollectionViewCell . I subclassed UICollectionViewCell , and here is my code where I add various UI elements to the cell's content view and adding shadow to the layer:
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ApartmentState for dummies
...T. You can use a Queue<> object for example in multiple threads but if you don't lock properly, you'll have a nasty bug in your code that is very hard to diagnose.
The exact details of COM threading are too large to fit in a post. I'll focus on the specifics of your question. A thread that...
Python using enumerate inside list comprehension
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Or, if you don't insist on using a list comprehension:
>>> mylist = ["a","b","c","d"]
>>> list(enumerate(mylist))
[(0, 'a'), (1, 'b'), (2, 'c'), (3, 'd')]
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How to find the last field using 'cut'
...bash to run pipelines, not to process data in bulk. I mean, this is great if you have one line of text already in a shell variable, or if you want to do while IFS= read -ra array_var; do :;done <(cmd) to process a few lines. But for a big file, rev|cut|rev is probably faster! (And of course aw...