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How to convert BigDecimal to Double in Java?
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You need to use the doubleValue() method to get the double value from a BigDecimal object.
BigDecimal bd; // the value you get
double d = bd.doubleValue(); // The double you want
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How do I comment on the Windows command line?
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Lines starting with "rem" (from the word remarks) are comments:
rem comment here
echo "hello"
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Android ClickableSpan not calling onClick
... the correct approach is to manually implement a TouchListener and take it from there...
– slott
Dec 14 '19 at 14:22
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Why is GHC so large/big?
...model, similar to jhc. It might even compile faster if it would keep 'ld' from swapping.
– John L
Feb 1 '11 at 11:48
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Function to convert column number to letter?
...es anyone have an Excel VBA function which can return the column letter(s) from a number?
28 Answers
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How do I reword the very first git commit message?
...always rewrite the commits of the given branch. The branch reference value from the first time was saved in refs/original/master, before you ran the command.
– fork0
Aug 16 '12 at 18:38
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Why does Java's Arrays.sort method use two different sorting algorithms for different types?
...The java quicksort is a modified quicksort that does not derade to O(n^2), from the docs "This algorithm offers n*log(n) performance on many data sets that cause other quicksorts to degrade to quadratic performance"
– sbridges
Jan 7 '12 at 17:46
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How to run cron job every 2 hours
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0 */2 * * *
The answer is from https://crontab.guru/every-2-hours. It is interesting.
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How Do I Take a Screen Shot of a UIView?
...xt:UIGraphicsGetCurrentContext()];
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return image;
}
It is considerably faster then the existing renderInContext: method.
Reference: https://developer.apple.com/library/content/qa/qa1817/_index.h...
How to use the 'sweep' function
... is defined by STATS.
So, for each row (or column), you will take a value from STATS and use in the operation defined by FUN.
For instance, if you want to add 1 to the 1st row, 2 to the 2nd, etc. of the matrix you defined, you will do:
sweep (M, 1, c(1: 4), "+")
I frankly did not understand th...