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Where can I learn how to write C code to speed up slow R functions? [closed]
...ple example is this blog post where I show that instead of worrying about 10% differences (in one of the Radford Neal examples) we can get eightyfold increases with C++ (on what is of course a contrived example).
Edit 3: There is complexity in that you may run into C++ errors that are, to put it mi...
Make an image width 100% of parent div, but not bigger than its own width
...t div, but only as long as that width isn’t wider than its own width at 100%. I’ve tried this, to no avail:
9 Answers
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Is there a way to use shell_exec without waiting for the command to complete?
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150
How about adding.
"> /dev/null 2>/dev/null &"
shell_exec('php measurePerformance.php...
Is DateTime.Now the best way to measure a function's performance?
...tch.StartNew();
PerformWork();
sw.Stop();
Console.WriteLine("Time taken: {0}ms", sw.Elapsed.TotalMilliseconds);
Stopwatch automatically checks for the existence of high-precision timers.
It is worth mentioning that DateTime.Now often is quite a bit slower than DateTime.UtcNow due to the work tha...
How to set top-left alignment for UILabel for iOS application?
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answered Aug 25 '11 at 14:30
shawnwallshawnwall
4,23811 gold badge2323 silver badges3333 bronze badges
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href=“tel:” and mobile numbers
...fore the rest of the number. For example, in Australia one would dial:
0 - trunk prefix
2 - Area code for New South Wales
6555 - STD code for a specific telephone exchange
1234 - Telephone Exchange specific extension.
For a mobile phone this becomes
0 - trunk prefix
4 - Are...
Android - Set max length of logcat messages
...size buffer in logcat for binary logs (/dev/log/events) and this limit is 1024 bytes.
For the non-binary logs there is also a limit:
#define LOGGER_ENTRY_MAX_LEN (4*1024)
#define LOGGER_ENTRY_MAX_PAYLOAD (LOGGER_ENTRY_MAX_LEN - sizeof(struct logger_entry))
So the real message size for bot...
When should we use mutex and when should we use semaphore
... edited Aug 22 '12 at 7:29
j0k
21.5k1414 gold badges7373 silver badges8484 bronze badges
answered Aug 22 '12 at 3:12
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What is the difference between '/' and '//' when used for division?
... Python 2.x to adopt the 3.x behavior.
Regardless of the future import, 5.0 // 2 will return 2.0 since that's the floor division result of the operation.
You can find a detailed description at https://docs.python.org/whatsnew/2.2.html#pep-238-changing-the-division-operator
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How can I pass an argument to a PowerShell script?
...owerShell script named itunesForward.ps1 that makes iTunes fast forward 30 seconds:
7 Answers
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