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How to define @Value as optional

... the same way. – Stefan L Sep 22 at 11:50 Update: A small hello-world type spring non-boot application based on annota...
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How to add dividers and spaces between items in RecyclerView?

... Community♦ 111 silver badge answered Nov 20 '14 at 10:28 EyesClearEyesClear 24.8k77 gold ...
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Is there a difference between authentication and authorization?

... answered Jun 16 '11 at 6:27 Michael FoukarakisMichael Foukarakis 34.2k55 gold badges7373 silver badges111111 bronze badges ...
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What does “var FOO = FOO || {}” (assign a variable or an empty object to that variable) mean in Java

... | edited Jun 23 '11 at 7:23 answered Jun 22 '11 at 12:15 ...
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Why were pandas merges in python faster than data.table merges in R in 2012?

... | edited Mar 24 '16 at 11:30 Alex Riley 117k3636 gold badges211211 silver badges195195 bronze badges ...
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Comments in .gitignore?

... 11 @cregox - Also, I like using computers without command lines - git is wrong place for you then, sorry. – manojlds ...
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Omit rows containing specific column of NA

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What exactly does @synthesize do?

... | edited May 11 '16 at 8:34 answered Jul 22 '14 at 14:29 ...
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Algorithm to return all combinations of k elements from n

... pretty quickly, you'll have problems by 20 elements in your set -- 20C3 = 1140. And if you want to iterate over the set it's best to use a modified gray code algorithm so you aren't holding all of them in memory. These generate the next combination from the previous and avoid repetitions. There are...
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What is the difference between “Class.forName()” and “Class.forName().newInstance()”?

... answered Jan 19 '10 at 11:35 Pascal ThiventPascal Thivent 524k126126 gold badges10121012 silver badges10991099 bronze badges ...