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What is the fastest/most efficient way to find the highest set bit (msb) in an integer in C?
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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...
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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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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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 to join multiple lines of file names into one with custom delimiter?
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How do you remove duplicates from a list whilst preserving order?
...dd? Python is a dynamic language, and resolving seen.add each iteration is more costly than resolving a local variable. seen.add could have changed between iterations, and the runtime isn't smart enough to rule that out. To play it safe, it has to check the object each time.
If you plan on using th...
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...
Approximate cost to access various caches and main memory?
... and Xeon range of processors. I should stress, this has what you need and more (for example, check page 22 for some timings & cycles for example).
Additionally, this page has some details on clock cycles etc. The second link served the following numbers:
Core i7 Xeon 5500 Series Data Source...