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In Scala how do I remove duplicates from a list?
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scala.collection.immutable.List now has a .distinct method.
So calling dirty.distinct is now possible without converting to a Set or Seq.
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Why malloc+memset is slower than calloc?
It's known that calloc is different than malloc in that it initializes the memory allocated. With calloc , the memory is set to zero. With malloc , the memory is not cleared.
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How can I use threading in Python?
...nction are provided by two libraries:multiprocessing, and also its little known, but equally fantastic step child:multiprocessing.dummy.
multiprocessing.dummy is exactly the same as multiprocessing module, but uses threads instead (an important distinction - use multiple processes for CPU-intensive...
Error : The service is invalid
...to clear the DerivedData as @AminNegm-Awad mentioned. I restarted IDE too, now it's all fine. Superb answer and comments!
– Vijay Kumar Kanta
Apr 10 '19 at 12:25
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How to abort an interactive rebase if --abort doesn't work?
I've got myself into a muddle via an interactive rebase, and I now wish to abort it. (i.e. go back to the point before I was dropped into interactive rebase mode, in my case via git pull --rebase .) The way to do this seems to be via git rebase --abort , but this doesn't work:
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RegEx to parse or validate Base64 data
...t base64, chances are you are not interested in empty strings. At least i know i am not.
– njzk2
Aug 22 '11 at 13:19
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How to change colors of a Drawable in Android?
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I know this question was ask way before Lollipop but I would like to add a nice way to do this on Android 5.+. You make an xml drawable that references the original one and set tint on it like such:
<?xml version="1.0" encod...
How do you read CSS rule values with JavaScript?
...rmat you'd see in an inline style. I'd like to be able to do this without knowing what is contained in a particular rule, so I can't just pull them out by style name (like .style.width etc.)
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Call by name vs call by value in Scala, clarification needed
...def something() = {
println("calling something")
1 // return value
}
Now we are going to define two function that accept Int arguments that are exactly the same except that one takes the argument in a call-by-value style (x: Int) and the other in a call-by-name style (x: => Int).
def callB...
Infinity symbol with HTML
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Now this is the first page that comes up when you google the question.
– whitebeard
Jul 23 '15 at 11:25
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