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What is the theoretical maximum number of open TCP connections that a modern Linux box can have
Assuming infinite performance from hardware, can a Linux box support >65536 open TCP connections?
3 Answers
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When is a C++ destructor called?
...used part of its memory space.
Now, what happens when/if you erase an item from the vector? It can't just use delete -- that would release its entire block of memory; it needs to destroy one object in that memory without destroying any others, or releasing any of the block of memory it controls (for...
Long-held, incorrect programming assumptions [closed]
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That I should have only one exit point from a function/method.
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answered May 20 '09 at 17:17
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Git Push Error: insufficient permission for adding an object to repository database
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For Ubuntu (or any Linux)
From project root,
cd .git/objects
ls -al
sudo chown -R yourname:yourgroup *
You can tell what yourname and yourgroup should be by looking at the permissions on the majority of the output from that ls -al command
Note: re...
what is the right way to treat Python argparse.Namespace() as a dictionary?
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@RaymondHettinger Okay, neat. I got that note from the /3/ version of the docs (on closer inspection, 3.1 to 3.4 including), so the correction is apparently missing there.
– user395760
Jun 2 '13 at 12:44
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.NET 4.0 has a new GAC, why?
... the ability to store different versions of assemblies as long as they are from the same CLR. They do not want to break old applications.
See the following information in MSDN about the GAC changes in 4.0.
For example, if both .NET 1.1 and .NET 2.0 shared the same GAC, then a .NET 1.1 application,...
Limiting floats to two decimal points
...exactly. The command line is just showing you the full floating point form from memory.
With floating point representation, your rounded version is the same number. Since computers are binary, they store floating point numbers as an integer and then divide it by a power of two so 13.95 will be repr...
Wait for a process to finish
...acOS, for example, implements BSD's kqueue), but not all make it available from command-line.
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Difference between map, applymap and apply methods in Pandas
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Straight from Wes McKinney's Python for Data Analysis book, pg. 132 (I highly recommended this book):
Another frequent operation is applying a function on 1D arrays to each column or row. DataFrame’s apply method does exactly th...
What is the maximum length of a valid email address?
... says the limit is "256 octets", including separators (a deliberate change from RFC 2821 which said "characters"). I believe the 256-octet limit (minus 2 for 254) is not superseded, and the effective character limit is reduced for addresses with multi-byte UTF-8 characters.
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