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Count number of days between two dates

... 10 Answers 10 Active ...
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Merge multiple lines (two blocks) in Vim

... 881 +100 You can ...
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ggplot2 legend to bottom and horizontal

... 147 If you want to move the position of the legend please use the following code: library(reshap...
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Why does javascript map function return undefined?

... 187 You aren't returning anything in the case that the item is not a string. In that case, the fun...
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Java 8: Where is TriFunction (and kin) in java.util.function? Or what is the alternative?

...you can't just leave an argument open. You can't just say "well, let x := 1" and try out every y you may like to try. You have to construct every time the whole tuple with x := 1. So if you like to see what the functions return for y := 1, y := 2, y := 3 you have to write f(1,1) , f(1,2) , f(1,3)....
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Extract subset of key-value pairs from Python dictionary object?

I have a big dictionary object that has several key value pairs (about 16), but I am only interested in 3 of them. What is the best way (shortest/efficient/most elegant) to achieve that? ...
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How to test an SQL Update statement before running it?

...e as the UPDATE. So if you UPDATE is UPDATE foo SET bar = 42 WHERE col1 = 1 AND col2 = 'foobar'; The following will show you which rows will be updated: SELECT * FROM foo WHERE col1 = 1 AND col2 = 'foobar'; shar...
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XML schema or DTD for logback.xml?

... | edited Jul 4 '17 at 10:25 answered Dec 24 '12 at 20:37 ...
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How can I calculate the time between 2 Dates in typescript

... 160 Use the getTime method to get the time in total milliseconds since 1970-01-01, and subtract th...
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How to get maximum value from the Collection (for example ArrayList)?

...aximum value in this list. E.g. suppose the arrayList stored values are : 10, 20, 30, 40, 50 and the max value would be 50 . ...