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How can I get around MySQL Errcode 13 with SELECT INTO OUTFILE?

... Which particular version of Ubuntu is this and is this Ubuntu Server Edition? Recent Ubuntu Server Editions (such as 10.04) ship with AppArmor and MySQL's profile might be in enforcing mode by default. You can check this by executing sudo aa-status like so: # sudo a...
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How can I plot separate Pandas DataFrames as subplots?

I have a few Pandas DataFrames sharing the same value scale, but having different columns and indices. When invoking df.plot() , I get separate plot images. what I really want is to have them all in the same plot as subplots, but I'm unfortunately failing to come up with a solution to how and would...
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Using do block vs braces {}

... is a bit old question but I would like to try explain a bit more about {} and do .. end like it is said before bracket syntax has higher precedence order than do..end but how this one makes difference: method1 method2 do puts "hi" end in this case, method1 will be called with the bloc...
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Check if page gets reloaded or refreshed in JavaScript

...ome had recently change this behavior. When user click current address bar and hit enter, the value of performance.navigation.type will be 1 which should be 0. I tested in Version 56. Not sure why. – Jackwin tung Feb 19 '17 at 9:28 ...
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Intersection and union of ArrayLists in Java

...ut using any third-party library. Main advantage over retainAll, removeAll and addAll is that these methods don't modify the original lists input to the methods. public class Test { public static void main(String... args) throws Exception { List<String> list1 = new ArrayList<...
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How to remove element from array in forEach loop?

... element in an array in a forEach loop, but am having trouble with the standard solutions I've seen. 7 Answers ...
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How to calculate moving average without keeping the count and data-total?

...d a way to calculate a moving cumulative average without storing the count and total data that is received so far. 8 Answer...
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How do you test to see if a double is equal to NaN?

I have a double in Java and I want to check if it is NaN . What is the best way to do this? 7 Answers ...
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How do I declare a 2d array in C++ using new?

... rowCount; ++i) a[i] = new int[colCount]; The above, for colCount= 5 and rowCount = 4, would produce the following: share | improve this answer | follow ...
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OSGi, Java Modularity and Jigsaw

...ven was. OSGi was just some buzzword that I kept seeing cropping up over and over again, and so I finally set aside some time to brush up on it. ...