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How to unload a package without restarting R

...ating, but conceivably this could be used in a program to use one function and then another--although namespace referencing is probably a better idea for that use). ...
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Meaning of Open hashing and Closed hashing

... some sort of open addressing strategy. This explains why "closed hashing" and "open addressing" are synonyms. Contrast this with open hashing - in this strategy, none of the objects are actually stored in the hash table's array; instead once an object is hashed, it is stored in a list which is sep...
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Xcode Project vs. Xcode Workspace - Differences

I am trying to understand how the whole ecosystem of iOS works. Until now, I could find an answer for most of my question (and trust me, there have been a lots of them), but for this one, there seems to be no clear answer yet. ...
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Is there any haskell function to concatenate list with separator?

... similarly, only that the strings are imploded using the newline character and that a newline character is also added to the end. (This makes it useful for serializing text files, which must per POSIX standard end with a trailing newline) ...
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jQuery Datepicker onchange event issue

...law in the datepicker: It always fires onSelect (even if nothing changed), and doesn't fire any event on the underlying input on change. (If you look in the code of that example, we're listening for changes, but they aren't being raised.) It should probably fire an event on the input when things cha...
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Python: TypeError: cannot concatenate 'str' and 'int' objects [duplicate]

...n assign the result of the str(c) call to c as correctly shown by @jamylak and then concatenate all of the strings, or you can replace the last print simply with this: print "a + b as integers: ", c # note the comma here in which case str(c) isn't necessary and can be deleted. Output of sam...
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What is difference between Collection.stream().forEach() and Collection.forEach()?

I understand that with .stream() , I can use chain operations like .filter() or use parallel stream. But what is difference between them if I need to execute small operations (for example, printing the elements of the list)? ...
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Running karma after installation results in 'karma' is not recognized as an internal or external com

... The command line interface is in a separate package. To install this use: npm install -g karma-cli share | improve this an...
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Where do I use delegates? [closed]

...od it defines. Based on this statement, a delegate is a function pointer and it defines what that function looks like. A great example for a real world application of a delegate is the Predicate. In the example from the link, you will notice that Array.Find takes the array to search and then a p...
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What is x after “x = x++”?

...gning the old value of x back into itself. x = x++; x++ increments x and returns its old value. x = assigns the old value back to itself. So in the end, x gets assigned back to its initial value. share | ...