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Get unique values from a list in python [duplicate]
...by commas. You can get the unique values by converting the list to a set.
mylist = ['nowplaying', 'PBS', 'PBS', 'nowplaying', 'job', 'debate', 'thenandnow']
myset = set(mylist)
print(myset)
If you use it further as a list, you should convert it back to a list by doing:
mynewlist = list(myset)
...
Is it expensive to use try-catch blocks even if an exception is never thrown?
...: benchmarks) {
System.out.println(bm);
}
}
}
On my computer, this prints something like:
try 0.598 ns
no try 0.601 ns
At least in this trivial example, the try statement had no measurable impact on performance. Feel free to measure more complex ones.
Generally spe...
How do I create an HTML table with a fixed/frozen left column and a scrollable body?
...
Very Nice! Thank You! i didn't use <th> for my own reasons, i used a class to indicate which column were to be fixed, and, for good measure, added a visibility: collapse; to the columns to hide from the fixed table (gotta love the :not() css selector!). i also used ...
What's the difference between NOT EXISTS vs. NOT IN vs. LEFT JOIN WHERE IS NULL?
...LEFT JOIN / IS NULL: Oracle
NOT IN vs. NOT EXISTS vs. LEFT JOIN / IS NULL: MySQL
In a nutshell:
NOT IN is a little bit different: it never matches if there is but a single NULL in the list.
In MySQL, NOT EXISTS is a little bit less efficient
In SQL Server, LEFT JOIN / IS NULL is less efficient
...
Do HTML WebSockets maintain an open connection for each client? Does this scale?
...ication responsiveness a lot, since CDN can be geographically tuned...
To my knowledge, there is no WebSockets support in CDN yet, and I suspect it would never be. WebSockets are statefull, whereas HTTP is stateless, so is much easily cached. In fact, to make WebSockets CDN-friendly, you may need t...
How much space can your BitBucket account have?
... have no desire for MP3s audio files but being able to exchange files with my accountant and track progress in issues that are beyond code in something like JIRA is extremely useful.
Bitbucket is a great service though. Check them out.
...
How can I programmatically generate keypress events in C#?
... Suitable, if your window will be on top. It partially solved my situation, thanks!
– Sergey
Sep 18 '12 at 17:54
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Grasping the Node JS alternative to multithreading
...multithreaded all by its own. And finally, while I'm not an apache expert, my impression from other articles is that the worker MPM is in fact very commonly used.
– Michael Borgwardt
Apr 17 '17 at 13:22
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When should one use final for method parameters and local variables?
...as changed a bit in the last 10 years. I can easily fit a 300 char line on my screen without scrolling. Nevertheless, readability is of course better without the final before every parameter.
– brimborium
May 17 '13 at 9:20
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Is there a setting on Google Analytics to suppress use of cookies for users who have not yet given c
...s allow website to track their usage. I am not a lawyer or anything but in my opinion this script complies to the EU cookie law.
Check out this plunk to see it in action: http://plnkr.co/MwH6xwGK00u3CFOTzepK
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