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How to print the contents of RDD?
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If you want to view the content of a RDD, one way is to use collect():
myRDD.collect().foreach(println)
That's not a good idea, though, when the RDD has billions of lines. Use take() to take just a few to print out:
myRDD...
Iterate keys in a C++ map
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If you really need to hide the value that the "real" iterator returns (for example because you want to use your key-iterator with standard algorithms, so that they operate on the keys instead of the pairs), then take a look a...
How to clear MemoryCache?
...ng MemoryCache.Default... MSDN's MemoryCache documentation makes me wonder if disposing and recreating is recommended: "Do not create MemoryCache instances unless it is required. If you create cache instances in client and Web applications, the MemoryCache instances should be created early in the ap...
Rails 3 execute custom sql query without a model
... row[0]
end
You need to have TinyTds gem installed, since you didn't specify it in your question I didn't use Active Record
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Where does Chrome store extensions?
... in the place where there are selected from in all Operating Systems.
Ex: If i load a unpacked Extension from E:\Chrome Extension the unpacked Extension is still in the same location
Storage Location for Packed Extensions
Navigate to chrome://version/ and look for Profile Path, it is your default...
How can I check whether a radio button is selected with JavaScript?
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Anyone know if it is possible to chain selectors like this? input[name=gender][type=radio] or input[name=gender,type=radio] just for extra validation?
– Ty_
Nov 17 '15 at 15:26
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How do I finish the merge after resolving my merge conflicts?
... of completing a merge after resolving conflicts is to use 'git commit'.
Now with commands like 'git rebase' and 'git cherry-pick' having a '--continue' option adding such an option to 'git merge' presents a consistent UI.
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Git: fatal: Pathspec is in submodule
...worked for me:
git rm --cached directory
git add directory
This works if you purposefully removed the .git directory because you wanted to add directory to your main git project. In my specific case, I had git cloned an extension and ran git add . without thinking too much. Git decided to creat...
Is it better in C++ to pass by value or pass by constant reference?
...ecially true before the existence of move semantics. The reason is simple: if you passed by value, a copy of the object had to be made and, except for very small objects, this is always more expensive than passing a reference.
With C++11, we have gained move semantics. In a nutshell, move semantics...
How do I convert a String object into a Hash object?
...ver, this requires the same to be true of all of the objects in the hash.
If I start with the hash {:a => Object.new}, then its string representation is "{:a=>#<Object:0x7f66b65cf4d0>}", and I can't use eval to turn it back into a hash because #<Object:0x7f66b65cf4d0> isn't valid ...