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Context switches much slower in new linux kernels

...in your setup, just cat the current_driver file in the cpuidle section of /sys/devices/system/cpu as follows: cat /sys/devices/system/cpu/cpuidle/current_driver If you want your modern Linux OS to have the lowest context switch latency possible, add the following kernel boot parameters to disable...
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How to use R's ellipsis feature when writing your own function?

... You can convert the ellipsis into a list with list(), and then perform your operations on it: > test.func <- function(...) { lapply(list(...), class) } > test.func(a="b", b=1) $a [1] "character" $b [1] "numeric" So your ...
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Array.Copy vs Buffer.BlockCopy

...hen you're provided with an array of primitives (say, shorts), and need to convert it to an array of bytes (say, for transmission over a network). I use this method frequently when dealing with audio from the Silverlight AudioSink. It provides the sample as a short[] array, but you need to convert...
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LINQPad [extension] methods [closed]

...g() used, please follow this link at Stackoverflow - it also allows you to convert it back if needed): System.Security.SecureString GetPasswordSecure(string Name, bool noDefaultSave=true) {   return Util.GetPassword(Name, noDefaultSave).ToSecureString(); } Util.Cmd This method works like a c...
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An item with the same key has already been added

...e foreach (var item in myObject) { myDictionary.Add(Convert.ToString(item.x), item.y); } item.x had a duplicate value share | i...
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Using logging in multiple modules

...ks as well) using basicConfig: # package/__main__.py import logging import sys logging.basicConfig(stream=sys.stdout, level=logging.INFO) using fileConfig: # package/__main__.py import logging import logging.config logging.config.fileConfig('logging.conf') and then create every logger using: # p...
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Why does the Scala compiler disallow overloaded methods with default arguments?

...lly I added an implicit conversion to the class in one case which did just convert the alternative type to the type accepted. It just feels ugly. And the approach with the default args should just work! – soc Jan 10 '11 at 22:52 ...
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String's Maximum length in Java - calling length() method

...pecification says that integers whose size is smaller than that of int are converted to int before calculation (if my memory serves me correctly) and it is one reason to choose int when there is no special reason. The maximum length at compilation time is at most 65536. Note again that the length i...
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Does Java casting introduce overhead? Why?

...ception. Taken from JavaWorld: The cost of casting Casting is used to convert between types -- between reference types in particular, for the type of casting operation in which we're interested here. Upcast operations (also called widening conversions in the Java Language Spec...
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How can I get a java.io.InputStream from a java.lang.String?

... Do we have any library which converts custom object into source of input stream; something like IOUtils.toInputStream(MyObject object)? – nawazish-stackoverflow Jan 28 '17 at 16:05 ...