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What does “coalgebra” mean in the context of programming?
I have heard the term "coalgebras" several times in functional programming and PLT circles, especially when the discussion is about objects, comonads, lenses, and such. Googling this term gives pages that give mathematical description of these structures which is pretty much incomprehensible to me. ...
Java: is there a map function?
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This is another functional lib with which you may use map: http://code.google.com/p/totallylazy/
sequence(1, 2).map(toString); // lazily returns "1", "2"
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How do I determine whether an array contains a particular value in Java?
I have a String[] with values like so:
29 Answers
29
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Dependency Inject (DI) “friendly” library
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What is the advantage of using forwarding references in range-based for loops?
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How can I use map and receive an index as well in Scala?
...e (e, i) => println(i+" "+e) }
0 Mary
1 had
2 a
3 little
4 lamb
From: http://www.artima.com/forums/flat.jsp?forum=283&thread=243570
You also have variations like:
for((e,i) <- List("Mary", "had", "a", "little", "lamb").zipWithIndex) println(i+" "+e)
or:
List("Mary", "had", "a", "li...
[SOLVED] Can't send payload > 23bytes(MTU setted to 128bytes) - #9 by ...
...MTU that you did not yet submit (a temporal anomaly)
Here is the doc page:
http://iot.appinventor.mit.edu/#/bluetoothle/bluetoothleintro
Here is the doc for the event:
MTUChanged – The MTUChanged event is run when the two BluetoothLE devices have successfully changed their maximum transmission ...
How do I address unchecked cast warnings?
...s.uncheckedCast;
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HashMap<String, String> getItems(javax.servlet.http.HttpSession session) {
return uncheckedCast(session.getAttribute("attributeKey"));
}
Some more discussion about this is here:
http://cleveralias.blogs.com/thought_spearmints/2006/01/suppresswarning.html
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How to find all duplicate from a List? [duplicate]
I have a List<string> which has some words duplicated. I need to find all words which are duplicates.
9 Answers
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How to measure time in milliseconds using ANSI C?
Using only ANSI C, is there any way to measure time with milliseconds precision or more? I was browsing time.h but I only found second precision functions.
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