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What is the difference between map and flatMap and a good use case for each?
...'s assign 1 as value for each key to get the word count.
fm: RDD created by using flatMap
wc: RDD created using map
>>> fm.map(lambda word : (word,1)).collect()
[(u'hadoop', 1), (u'is', 1), (u'fast', 1), (u'hive', 1), (u'is', 1), (u'sql', 1), (u'on', 1), (u'hdfs', 1), (u'spark', 1), (...
Selecting empty text input using jQuery
...a bug in the Sizzle selector engine, but I don't have time to investigate. By the way, I would suggest using an element tag in the selector, otherwise each element will be checked to see if there is a match for the attribute values.
– Russ Cam
Aug 19 '09 at 12:...
CSS background opacity with rgba not working in IE 8
..., or, better yet, just ignore it. People using IE8- deserve to be punished by not seeing border radius, transparent background etc.
– Evgeny
Jul 10 '13 at 20:16
...
Why do results vary based on curly brace placement?
...s semicolon insertion.
In your second example you return an object (built by the curly braces) with the property javascript and its value of "fantastic", effectively the same as this:
function test() {
var myObject = new Object();
myObject.javascript = "fantastic";
return myObject;
}
...
What is “android.R.layout.simple_list_item_1”?
... Heh, so they are. :P I'd tried looking for them before just by browsing the android jar within Eclipse and it just told me "Source Not Found". But yeah, they're under platforms > android-x > data > res > layout. Good call. :)
– Kevin Coppock
...
Running karma after installation results in 'karma' is not recognized as an internal or external com
...li globally:
npm install -g karma-cli
Now, check that karma was installed by typing:
which karma //echo something like: /usr/local/bin/karma
and check that karma server is working (ctr+c to quit):
karma start
You can also check that karma was installed by going to this directory:
cd /usr/local/...
How do you commit code as a different user?
...s assumed to be a pattern
and is used to search for an existing
commit by that author (i.e. rev-list --all -i --author=<author>); the commit author is then copied from the
first such commit found.
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What does a script-Tag with src AND content mean?
... SyntaxError if executed, it's simply "JSON text" that the script will use by itself later.
– Christian C. Salvadó
Jun 29 '11 at 23:17
...
What's the difference between :: (double colon) and -> (arrow) in PHP?
...n say() {
echo 'hello!';
}
}
$h = new Hello();
$h->say();
By the way: I don't think that using Symfony is a good idea when you don't have any OOP experience.
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Why doesn't JavaScript support multithreading?
...cript that allows us to create processes and threads which are all managed by the same JavaScript interpreter. This allows us to run actions in the following manner:
Process A, Thread 1
Process A, Thread 2
Process B, Thread 1
Process A, Thread 3
Process A, Thread 4
Process B, Thread 2
Pause Proces...