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Why do we need the “event” keyword while defining events?
... This is a thousand times better than MSDN's official one-line explanation: 'The event keyword is used to declare an event in a publisher class.'
– cowlinator
Apr 13 '16 at 18:17
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UICollectionView inside a UITableViewCell — dynamic height?
...to layout each time you change the model (e.g.: you set a UILabel with a text, then the cell has to be layout again).
- (void)bindWithModel:(id)model {
// Do whatever you may need to bind with your data and
// tell the collection view cell's contentView to resize
[self.contentView setN...
What is “lifting” in Haskell?
...a "lift" is? (I'm completely ignorant about monads, too :) Or can someone explain it to me with simple words?
5 Answers
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How does grep run so fast?
...r I used to use substring method in java but now I use GREP for it and it executes in a matter of seconds, it is blazingly faster than java code that I used to write.(according to my experience I might be wrong though)
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How do I pass extra arguments to a Python decorator?
...ctual_decorator
The outer function will be given any arguments you pass explicitly, and should return the inner function. The inner function will be passed the function to decorate, and return the modified function.
Usually you want the decorator to change the function behavior by wrapping it in ...
How to only find files in a given directory, and ignore subdirectories using bash
... just want to limit the find to the first level you can do:
find /dev -maxdepth 1 -name 'abc-*'
... or if you particularly want to exclude the .udev directory, you can do:
find /dev -name '.udev' -prune -o -name 'abc-*' -print
...
What is the difference between Non-Repeatable Read and Phantom Read?
...
From Wikipedia (which has great and detailed examples for this):
A non-repeatable read occurs, when during the course of a transaction, a row is retrieved twice and the values within the row differ between reads.
and
A phantom read occurs when, in the course of...
How to pass a class type as a function parameter
... allow any class. In this case the right type would be T.Type, because it expresses the link between the returningClass parameter and the parameter of the closure.
In fact, using it instead of AnyClass allows the compiler to correctly infer the types in the method call:
class func invokeService<...
Why is printing to stdout so slow? Can it be sped up?
...same output buffering as the terminal, which you can do by modifying your example to:
fp = file("out.txt", "w", 1) # line-buffered, like stdout
[...]
for x in range(lineCount):
fp.write(line)
os.fsync(fp.fileno()) # wait for the write to actually complete
I ran your file writing te...
String literals and escape characters in postgresql
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Partially. The text is inserted, but the warning is still generated.
I found a discussion that indicated the text needed to be preceded with 'E', as such:
insert into EscapeTest (text) values (E'This is the first part \n And this is the sec...