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What does `:_*` (colon underscore star) do in Scala?
...Child - sequence
: - type ascription, a hint that helps compiler to understand, what type does that expression have
_* - placeholder accepting any value + vararg operator
child ++ newChild : _* expands Seq[Node] to Node* (tells the compiler that we're rather working with a varargs, than a sequence...
adding header to python requests module
...ith your headers (key: value pairs where the key is the name of the header and the value is, well, the value of the pair) and pass that dict to the headers parameter on the .get or .post method.
So more specific to your question:
headers = {'foobar': 'raboof'}
requests.get('http://himom.com', head...
What are the differences between .so and .dylib on osx?
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The Mach-O object file format used by Mac OS X for executables and libraries distinguishes between shared libraries and dynamically loaded modules. Use otool -hv some_file to see the filetype of some_file.
Mach-O shared libraries have the file type MH_DYLIB and carry the extension .dyli...
Does Parallel.ForEach limit the number of active threads?
...uses an appropriate number of cores, based on how many you physically have and how many are already busy. It allocates work for each core and then uses a technique called work stealing to let each thread process its own queue efficiently and only need to do any expensive cross-thread access when it ...
How can I round to whole numbers in JavaScript?
...actly matches ECMAScript's Math.round()'s behavior of rounding to nearest, and running exact half-integers towards positive infinity.
– hmakholm left over Monica
Jul 11 '17 at 15:00
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What is the Scala annotation to ensure a tail recursive function is optimized?
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From the "Tail calls, @tailrec and trampolines" blog post:
In Scala 2.8, you will also be able to use the new @tailrec annotation to get information about which methods are optimised.
This annotation lets you mark specific methods that you hope th...
How to get Scala List from Java List?
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There's a handy Scala object just for this - scala.collection.JavaConverters
You can do the import and asScala afterwards as follows:
import scala.collection.JavaConverters._
val lst = node.getByXPath(xpath).asScala
lst.foreach{ node...
How to free memory in Java?
...n Java, similar to C's free() function? Or is setting the object to null and relying on GC the only option?
13 Answers
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Equivalent of strace -feopen < command > on mac os X
...l for debugging (hence programming related). On linux, we can use the command
1 Answer
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How to PUT a json object with an array using curl
...enter the data isn't good for bulk entry, so I'm trying to formulate a command line equivalent. When I examine the network request of the UI in chrome, I see a PUT request of a json object. When I try to replicate the request
...