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What is an index in SQL?

...e file the value is stored. In MySQL you can use EXPLAIN in front of your SELECT statement to see if your query will make use of any index. This is a good start for troubleshooting performance problems. Read more here: http://dev.mysql.com/doc/refman/5.0/en/explain.html ...
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Visual Studio loading symbols

...o there's a whole lot of IIS underneath me that can fail. Normally just deselecting Microsoft (and all remote) symbol servers as a source for data will work. – ebyrob Apr 14 at 12:18 ...
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Adjust UIButton font size to width

... That looks to me it as the same as using Xcode IB selecting label and seting it to Autoshrink minimum font scale to 0.01 – Leo Dabus Dec 4 '14 at 0:30 ...
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How to get Bitmap from an Uri?

... I don't understand how this is the selected answer – Nick Cardoso Feb 27 '14 at 23:45 12 ...
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How to view the contents of an Android APK file?

...It's shipped with Android Studio now. Just go to Build/Analyze APK... then select your APK :) share | improve this answer | follow | ...
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How do I insert a linebreak where the cursor is without entering into insert mode in Vim?

... the carriage returns are added. Check :help map-which-keys for advice on selecting unused keystrokes to map. share | improve this answer | follow | ...
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PDOException “could not find driver”

...your server. In Ubuntu/Debian you check for the package with: dpkg --get-selections | grep php | grep mysql Install the php5-mysql package if you do not have it. In Ubuntu/Debian you can use: PHP5: sudo apt-get install php5-mysql PHP7: sudo apt-get install php7.0-mysql Lastly, to get it wo...
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How to break out from a ruby block?

... def first_frog detect {|i| i =~ /frog/ } end def last_frog select {|i| i =~ /frog/ }.last end end p ["dog", "cat", "godzilla", "dogfrog", "woot", "catfrog"].first_frog # => "dogfrog" p ["hats", "coats"].first_frog # => nil p ["houses", "frogcars", "bottles", "superfrogs"].la...
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What is the difference between lemmatization vs stemming?

...meeting again tomorrow". Unlike stemming, lemmatisation can in principle select the appropriate lemma depending on the context. Source: https://en.wikipedia.org/wiki/Lemmatisation share | i...
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No grammar constraints (DTD or XML schema) detected for the document

...checked and then do a manual validate by right-clicking on the project and selecting "Validate" for the warnings to go away. It seems that there is a bug in eclipse in which the validator gets messed up. You should be able to at least have the manual validation work even if you don't want it to ha...