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How do I count unique values inside a list

... This is like a Counter but really inefficient cause most of the counts are thrown away, and list.count() is O(n) anyway. You don't even need to convert aa to list at all. See Vidul's answer instead. – wjandrea Sep 2...
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What is the difference between MySQL, MySQLi and PDO? [closed]

...ocedural style and the OO one with mysqli. – Patrick Allaert Jun 19 '10 at 9:31 @Patrick, thanks. I've corrected this...
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You asked me to pull without telling me which branch you want to merge with

...hed by default. Is there some configuration I can add in order to make all local branches track their remotes properly in the future? I don't think that there is. When you created bucket-4 locally, as I assume happened, the remote-tracking branch didn't exist, so it can't be set up at that po...
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an htop-like tool to display disk activity in linux [closed]

... would report the disk IO activity. Something similar to htop would be really cool. Has someone heard of something like that? ...
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How can I check a C# variable is an empty string “” or null? [duplicate]

... @Lion Liu: Actually I think PHP has exactly as much to offer. See: php.net/manual/en/function.empty.php – Milan Feb 2 '16 at 20:09 ...
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sqlite3-ruby install error on Ubuntu

I have the following error during sqlite3-ruby install: 19 Answers 19 ...
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Convert String to double in Java

...or everything: double total = Double.parseDouble(jlbTotal.getText().replaceAll("[^0-9.]", "")); - this basically replaces all characters that aren't a number or . to nothing, leaving only the number and decimal point to be parsed. – WhiteFang34 Apr 24 '11 at 10...
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IntelliJ IDEA shows errors when using Spring's @Autowired annotation

... But what if you actually forget to annotate a bean. You won't get any warning? – Cleankod Nov 22 '15 at 15:56 add a comm...
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How do I move the turtle in LOGO? [closed]

... Logo is all about moving the turtle... you give it commands like this: Forward 100 Right 45 You can do stuff like repeating commands too: Repeat 8 [Forward 100 Right 45] ; Draw an octagon (What do I win? 8-) ...
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Good open source django project for learning [closed]

...lar projects is directly on GitHub: https://github.com/search?q=django Finally: Awesome Django @ https://github.com/wsvincent/awesome-django Awesome Python @ https://github.com/vinta/awesome-python share | ...