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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...
How to unset a JavaScript variable?
...123 };
var foo = new Foo();
// foo.bar is 123
foo.bar = 456;
// foo.bar is now 456
delete foo.bar;
// foo.bar is 123 again.
So be careful.
EDIT: My answer is somewhat inaccurate (see "Misconceptions" at the end). The link explains all the gory details, but the summary is that there can be big dif...
Django Rest Framework - Could not resolve URL for hyperlinked relationship using view name “user-det
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@GrijeshChauhan— Thanks! Now fixed.
– Carlton Gibson
Apr 16 '15 at 11:45
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onKeyPress Vs. onKeyUp and onKeyDown
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This is of critical importance if you are doing something that relies on knowing the new value after the input rather than the current value such as inline validation or auto tabbing.
Scenario:
The user types 12345 into an input element.
The user selects the text 12345.
The user types the letter...
What is the difference between new/delete and malloc/free?
...arding the "Free Store" as opposed to the heap? A process' heap is a well-known language-independent (?) operating-system-level concept; where does the "Free Store" come from?
– einpoklum
Feb 21 '16 at 15:26
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Android: “Path for project must have only one segment”
...click the project, its name will be taken automatically.
Anyway, it works now. Yeah! :)
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adding directory to sys.path /PYTHONPATH
...NPATH = "$($pathToSourceRoot);$($pathToSourceRoot)/subdirs_if_required"
# Now run the actual script
python your_script.py
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PHP function to build query string from array
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@ceejayoz Well you've known it for a long time now... Your wish has come true?
– Andrew
Nov 30 '16 at 19:56
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Can I use a binary literal in C or C++?
...'ve seen a number of embedded-systems compilers that support it. I don't know any particular reason it shouldn't be a standard language feature.
– supercat
Aug 1 '11 at 21:34
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iOS Image Orientation has Strange Behavior
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The first exif link is broken now, and the second has been updated to exif.regex.info/exif.cgi I tried to edit the answer but @cj-dennis rejected it for some reason.
– Ryan
Apr 12 '18 at 5:19
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