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How to convert an IPv4 address into a integer in C#?
...ses. Meanwhile, the IPAddress.Address property, while deprecated, is an Int64 that returns the unsigned 32-bit value of the IPv4 address (the catch is, it's in network byte order, so you need to swap it around).
For example, my local google.com is at 64.233.187.99. That's equivalent to:
64*2^24 + ...
What is causing “Unable to allocate memory for pool” in PHP?
...allowing only 32MB is ridiculously low. PHP was designed when servers were 64MB and most scripts were using one php file per page. Nowadays solutions like Magento require more than 10k files (~60Mb in APC). You should allow enough memory so most of php files are always cached. It's not a waste, it's...
Why does struct alignment depend on whether a field type is primitive or user-defined?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
Platform independent size_t Format specifiers in c?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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avoid page break inside row of table
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Unfortunately this doesn't (yet) work with webkit based browsers.
– Attila Fulop
Mar 12 '13 at 19:17
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AtomicInteger lazySet vs. set
...ite. There are a few
other use cases along these lines for non-reference-based
atomics as well, so the method is supported across all of the
AtomicX classes.
For people who like to think of these operations in terms of
machine-level barriers on common multiprocessors, lazySet
provides...
How can I generate UUID in C#
...irst three Guid parts.
If you are transmitting the bytes (for example, as base64), you can't just use Guid.ToByteArray() and encode it. You'll need to Array.Reverse the first three parts (Data1-3).
I do it this way:
var rfc4122bytes = Convert.FromBase64String("aguidthatIgotonthewire==");
Array.Re...
How to profile a bash shell script slow startup?
...O question and already posted answers.
There is 4+ answer:
The first is based on @DennisWilliamson's idea but with a lot less of resource consumption
The second was my own (before this;)
The third is based on @fgm answer, but more accurate.
The last use script, scriptreplay and timing file.
Final...
Fast way of counting non-zero bits in positive integer
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I tried adapting Óscar's and Adam's solutions to process the integer in 64-bit and 32-bit chunks, respectively. Both were at least ten times slower than bin(n).count("1") (the 32-bit version took about half again as much time).
On the other hand, gmpy popcount() took about 1/20th of the time of ...
What's the correct way to convert bytes to a hex string in Python 3?
... convenient transformations like quoted-printable (fits into 7bits ascii), base64 (fits into alphanumerics), hex escaping, gzip and bz2 compression. In Python 2, you could do:
b'foo'.encode('hex')
In Python 3, str.encode / bytes.decode are strictly for bytes<->str conversions. Instead, you...