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How to find the length of a string in R
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424
See ?nchar. For example:
> nchar("foo")
[1] 3
> set.seed(10)
> strn <- paste(sampl...
Why is Go so slow (compared to Java)?
As we could see from The Computer Language Benchmarks Game in 2010:
10 Answers
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Switch statement: must default be the last case?
...his explains the fall-through behaviour and why break is necessary.
6.8.4.2.7 even gives an example:
switch (expr)
{
int i = 4;
f(i);
case 0:
i=17;
/*falls through into default code */
default:
printf("%d\n", i);
}
In the artificial program fragment the
object ...
Can you turn off Peek Definition in Visual Studio 2013 and up?
In Visual Studio 2013 and up, there is the Peek Definition feature when you Ctrl + Click. At first I thought this was cool, but I have found that the majority of the time, I need to click the Promote to Document button, since I make lots of changes to the files I Ctrl + Click on. But after Googl...
How to change owner of PostgreSql database?
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2 Answers
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Can you target with css?
...some further investigations, and pointed out that IE8 (on Win7) and Chrome 2/Safari 4b allows you to style BR somewhat. And indeed, I checked the IE demo page with IE Net Renderer's IE8 engine, and it worked.
Update 2
c69 made some further investigations, and it turns out you can style the marker f...
Is there any way to delete local commits in Mercurial?
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247
Enable the "strip" extension and type the following:
hg strip #changeset# --keep
Where #cha...
Find the files existing in one directory but not in the other [closed]
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diff -r dir1 dir2 | grep dir1 | awk '{print $4}' > difference1.txt
Explanation:
diff -r dir1 dir2 shows which files are only in dir1 and those only in dir2 and also the changes of the files present in both directories if any.
diff -r ...
How can I get column names from a table in Oracle?
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25 Answers
25
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