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What is the difference between map and flatMap and a good use case for each?
...ct
res0: Array[String] = Array("Roses are red", "Violets are blue")
Now, map transforms an RDD of length N into another RDD of length N.
For example, it maps from two lines into two line-lengths:
rdd.map(_.length).collect
res1: Array[Int] = Array(13, 16)
But flatMap (loosely speaking...
Detect network connection type on Android
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If the problem is to find whether the phone's network is connected and fast enough to meet your demands you have to handle all the network types returned by getSubType().
It took me an hour or two to research and write this ...
PHP array delete by value (not key)
...nt) instead. No biggie, but just wanted anyone who had a similar issue to know that they weren't alone
– Angad
Aug 26 '13 at 14:11
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Python list subtraction operation
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Use a list comprehension:
[item for item in x if item not in y]
If you want to use the - infix syntax, you can just do:
class MyList(list):
def __init__(self, *args):
super(MyList, self).__init__(args)
def __sub__(self, other):
return self.__c...
What is an idiomatic way of representing enums in Go?
...return a.C
}
Inside the main package a.Baser is effectively like an enum now.
Only inside the a package you may define new instances.
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Can I set max_retries for requests.request?
...et the max_retries parameter on the HTTPAdapter() class was added, so that now you have to use alternative transport adapters, see above. The monkey-patch approach no longer works, unless you also patch the HTTPAdapter.__init__() defaults (very much not recommended).
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“Unknown class in Interface Builder file” error at runtime
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Despite the "Unknown class MyClass in Interface Builder file." error printed at runtime, this issue has nothing to do with Interface Builder, but rather with the linker, which is not linking a class because no code uses it directly.
When th...
Can I list-initialize a vector of move-only type?
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Now, I guess this should not be left without being mentioned in a comment :) move_only m[] = { move_only(), move_only(), move_only() }; std::vector<move_only> v(std::make_move_iterator(m), std::make_move_iterator(m + 3)...
How to convert a set to a list in python?
...to a list. You can use the newly built list like any normal list in python now.
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Proper way to wait for one function to finish before continuing?
...ne!');
});
}
As per @Janaka Pushpakumara's suggestion, you can now use arrow functions to achieve the same thing. For example:
firstFunction(() => console.log('huzzah, I\'m done!'))
Update: I answered this quite some time ago, and really want to update it. While callbacks are abso...