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Is it worth using Python's re.compile?
...
I've had a lot of experience running a compiled regex 1000s of times versus compiling on-the-fly, and have not noticed any perceivable difference. Obviously, this is anecdotal, and certainly not a great argument against compiling, but I've found the difference to be negligible.
...
Do try/catch blocks hurt performance when exceptions are not thrown?
...topwatch();
double d = 0;
w.Start();
for (int i = 0; i < 10000000; i++)
{
try
{
d = Math.Sin(1);
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
}
}
w.Stop();
Console.WriteLine(w.Elap...
Clang vs GCC - which produces faster binaries? [closed]
...opment branch (to which these results pertain)
comprises at present around 11K LOC in about 90 files. It is coded,
now, in C++ that is rich in polymorphism and templates and but is still
mired in many patches by its not-so-distant past in hacked-together C.
Move semantics are not expressly exploited...
Fast way of counting non-zero bits in positive integer
...00FF00FF00FF) + ((n & 0xFF00FF00FF00FF00) >> 8)
n = (n & 0x0000FFFF0000FFFF) + ((n & 0xFFFF0000FFFF0000) >> 16)
n = (n & 0x00000000FFFFFFFF) + ((n & 0xFFFFFFFF00000000) >> 32) # This last & isn't strictly necessary.
return n
This works for 64-bit pos...
What is the best way to deal with the NSDateFormatter locale “feechur”?
... will be the date formatter for "NSString *dateStr = @"2014-04-05T04:00:00.000Z";" ?
– Agent Chocks.
May 22 '14 at 11:59
...
How to write a scalable Tcp/Ip based server
...Port number entered would seem to be invalid, should be between 1024 and 65000", e);
}
try
{
_serverSocket = new System.Net.Sockets.Socket(serverEndPoint.Address.AddressFamily, SocketType.Stream, ProtocolType.Tcp);
}
catch (System.Net.Sockets.SocketException e)
{
throw new A...
HashSet vs. List performance
...h:
Here's the code:
static void Main(string[] args)
{
int times = 10000000;
for (int listSize = 1; listSize < 10; listSize++)
{
List<string> list = new List<string>();
HashSet<string> hashset = new HashSet<string>();
for (int i = ...
Add Keypair to existing EC2 instance
... that you can access its file system.
ssh ...instance b...
sudo mkdir -p 000 /vol-a
sudo mount /dev/sdj /vol-a
Fix It
At this point your entire root file system from instance A is available for viewing and editing under /vol-a on instance B. For example, you may want to:
Put the correct ssh k...
Boost Statechart vs. Meta State Machine
...allpark numbers:
Most current PC hardware will easily cope with >100'000 events per second
Even very resource-constrained hardware will be able to process a few hundred events per second.
Regarding CPU load, if the number of events to process is much lower than these numbers, Boost.Statechar...
HTML table with 100% width, with vertical scroll inside tbody [duplicate]
...
PS: if you need borders for TH elements th {box-shadow: 1px 1px 0 #000; border-top: 0;} will help (since the default borders are not painted correctly on scroll).
For a variant of the above that uses just a bit of JS in order to accommodate for IE11 see this answer https://stackoverflow.com...