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Python `if x is not None` or `if not x is None`?
I've always thought of the if not x is None version to be more clear, but Google's style guide and PEP-8 both use if x is not None . Is there any minor performance difference (I'm assuming not), and is there any case where one really doesn't fit (making the other a clear winner for my convent...
How does a hash table work?
...omes back in to read the book, you feed the title through the program once more, and get back the same shelf number and slot number that you were originally given, and this is where the book is located.
The program, as others have already mentioned, is called a hash algorithm or hash computation an...
What is the fastest/most efficient way to find the highest set bit (msb) in an integer in C?
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What is the string concatenation operator in Oracle?
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Agreed for clarity, but || has the advantage to allow more then 2 fields easily
– Patrick Honorez
Jan 16 '14 at 9:42
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New features in java 7
...nt
Separate user locale and user-interface locale
ionet JSR 203: More new I/O APIs for the Java platform (NIO.2)
NIO.2 filesystem provider for zip/jar archives
SCTP (Stream Control Transmission Protocol)
SDP (Sockets Direct Protocol)
Use the Windows Vista IP...
When/Why to use Cascading in SQL Server?
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How to join multiple lines of file names into one with custom delimiter?
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Array extension to remove object by value
...s, it is now actually possible to write a method on a generic type that is more restrictive on the template, so the method
could now actually be defined as an extension of Array:
extension Array where Element : Equatable {
// ... same method as above ...
}
The protocol extension still has th...
How do exceptions work (behind the scenes) in c++
...buntu 4.1.2-0ubuntu4)"
.section .note.GNU-stack,"",@progbits
Even more exception handling tables, and assorted extra information.
So, the conclusion, at least for GCC on Linux: the cost is extra space (for the handlers and tables) whether or not exceptions are thrown, plus the extra cost o...
How do I cast a JSON object to a typescript class
...re, that might work too -- I don't have a sense of whether it would be any more efficient though as it would need to call an extra function call for each property.
– WiredPrairie
Apr 5 '14 at 2:57
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