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What is RSS and VSZ in Linux memory management
What are RSS and VSZ in Linux memory management? In a multithreaded environment how can both of these can be managed and tracked?
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Which is more preferable to use: lambda functions or nested functions ('def')?
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For n=1000 here's some timeit's of calling a function vs a lambda:
In [11]: def f(a, b):
return a * b
In [12]: g = lambda x, y: x * y
In [13]: %%timeit -n 100
for a in xrange(n):
for b in xrange(n):
f(a, b)
....:
100 loops, best of 3: 285 ms per loop
In...
How do you do a deep copy of an object in .NET? [duplicate]
...lative performance difference (4.77 seconds for deep nested MemberwiseCopy vs. 39.93 seconds for Serialization). Using nested MemberwiseCopy is almost as fast as copying a struct, and copying a struct is pretty darn close to the theoretical maximum speed .NET is capable of, which is probably quite c...
How do I adjust the anchor point of a CALayer, when Auto Layout is being used?
...iggering layout at the time that a view transform is applied.]
Autolayout vs. View Transforms
Autolayout does not play at all well with view transforms. The reason, as far as I can discern, is that you're not supposed to mess with the frame of a view that has a transform (other than the default id...
std::vector versus std::array in C++
... Yes. There isn't a significant advantage to using new std::array vs new std::vector.
– Mark Lakata
Jan 18 '17 at 18:34
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What is the difference between active and passive FTP?
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Redacted version of my article FTP Connection Modes (Active vs. Passive):
FTP connection mode (active or passive), determines how a data connection is established. In both cases, a client creates a TCP control connection to an FTP server command port 21. This is a standard outgoing c...
C++ - passing references to std::shared_ptr or boost::shared_ptr
... on overuse of shared_ptrs, there wasn't agreement about the pass-by-value-vs.-reference issue.
– Nicol Bolas
Apr 1 '12 at 1:17
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Why do I need 'b' to encode a string with Base64?
....x?
Edit: See http://docs.python.org/release/3.0.1/whatsnew/3.0.html#text-vs-data-instead-of-unicode-vs-8-bit for the gory details of strings in Python 3.x
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What do Clustered and Non clustered index actually mean?
...es to all rows, not just those that are actually duplicates.
The clustered vs non clustered nomenclature is also used for column store indexes. The paper Enhancements to SQL Server Column Stores states
Although column store data is not really "clustered" on any key, we
decided to retain the traditi...
Why C# fails to compare two object types with each other but VB doesn't?
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Per msdn.microsoft.com/en-us/library/cey92b0t(v=vs.110).aspx, in section "Typeless Programming with Relational Comparison Operators": =, along with all the other relational comparison operators such as <, >=, etc., are given special treatment when both or either side...