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How do I check if there are duplicates in a flat list?
...n.add(x)
return False
If your items are not hashable (sublists, dicts, etc) it gets hairier, though it may still be possible to get O(N logN) if they're at least comparable. But you need to know or test the characteristics of the items (hashable or not, comparable or not) to get the best perfor...
Are there disadvantages to using a generic varchar(255) for all text-based fields?
...s postcode , first name , last name , town , country , phone number etc, all of which are defined as VARCHAR(255) even though none of these fields will ever come close to having 255 characters. (If you're wondering, it's this way because Ruby on Rails migrations map String fields to VARCH...
What are the benefits of learning Vim? [closed]
...ntrols in any text input field in Mac OS, in most Unix shells, in Eclipse, etc. You can use vim-style controls in the less(1) command, on Slashdot, on gmail, etc.
Have fun!
share
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Should I use JSLint or JSHint JavaScript validation? [closed]
...(i = 0; i < dontEnumsLength; i++) throws Unexpected '++' where it's ok. etc.
– RaphaelDDL
Jul 9 '13 at 18:02
2
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Why is std::map implemented as a red-black tree?
...these trees require that nodes carry information on height, weight, color, etc. Only Splay trees are free from such additional info. But most people are afraid of Splay trees, because of the ramdomness of their structure!
Finally, trees can also carry weight information in the nodes, permitting wei...
What does pylint's “Too few public methods” message mean
...dded, you want o perform some operations on it, control how its displayed, etc.)
– Burhan Khalid
Dec 25 '12 at 4:34
Th...
Why should I avoid multiple inheritance in C++?
...ts (i.e. not in the same hierarchy, nothing in common, different concepts, etc.).
For example, you could have a system of Nodes with X,Y,Z coordinates, able to do a lot of geometric calculations (perhaps a point, part of geometric objects) and each Node is an Automated Agent, able to communicate wit...
What is a sealed trait?
...here makes sense to check all possible subtypes like yes | no , even | odd etc...
– Mário de Sá Vera
Apr 7 '18 at 16:13
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Best way to detect Mac OS X or Windows computers with JavaScript or jQuery
...mplete) list, which includes Linux, BSD, Android, Palm, Sony Playstations, etc.: stackoverflow.com/questions/19877924/…
– Michael Scheper
Mar 22 '16 at 22:36
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Downloading Java JDK on Linux via wget is shown license page instead
...b http://ppa.launchpad.net/webupd8team/java/ubuntu precise main" | tee -a /etc/apt/sources.list
echo "deb-src http://ppa.launchpad.net/webupd8team/java/ubuntu precise main" | tee -a /etc/apt/sources.list
apt-key adv --keyserver keyserver.ubuntu.com --recv-keys EEA14886
apt-get update
apt-get install...