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What is /dev/null 2>&1?
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What does the & symbol indicate in there 2>&1.
– Nobody
Jun 28 '17 at 9:47
18
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Remove NA values from a vector
... functions, including sum(), mean(), etc.)
Setting na.rm=TRUE does just what you're asking for:
d <- c(1, 100, NA, 10)
max(d, na.rm=TRUE)
If you do want to remove all of the NAs, use this idiom instead:
d <- d[!is.na(d)]
A final note: Other functions (e.g. table(), lm(), and sort()) h...
How do I force git to use LF instead of CR+LF under windows?
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what is the output of git diff --cached --name-only?
– Chronial
Mar 18 '14 at 22:29
3
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Is it possible to forward-declare a function in Python?
...ine a function before it's used, and defining it afterwards is impossible, what about defining it in some other module?
Technically you still define it first, but it's clean.
You could create a recursion like the following:
def foo():
bar()
def bar():
foo()
Python's functions are anony...
How to obtain the last path segment of a URI
...
is that what you are looking for:
URI uri = new URI("http://example.com/foo/bar/42?param=true");
String path = uri.getPath();
String idStr = path.substring(path.lastIndexOf('/') + 1);
int id = Integer.parseInt(idStr);
alternativel...
How to get screen dimensions as pixels in Android
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getWidth() or getSize()? What would I use if I need my app to run on API <13 as well as API >13?
– Carol
Apr 1 '12 at 5:29
5...
Python: What OS am I running on?
What do I need to look at to see whether I'm on Windows or Unix, etc?
25 Answers
25
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Push existing project into Github
...cal.git
Test to see that it worked by doing
git remote -v
You should see what your repo is linked to.
Then you can push your changes to github
git push github master
or
git push origin master
If you still get an error, you can force it with -f. But if you are working in a team environment, be c...
Get property value from string using reflection
...).GetValue(src, null);
}
Of course, you will want to add validation and whatnot, but that is the gist of it.
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Signed to unsigned conversion in C - is it always safe?
...igned, we add maximum value of the unsigned value (UINT_MAX +1). Similarly what is the easy way to convert from unsigned to signed? Do we need to subtract the given number from max value (256 in case of unsigned char)? For example: 140 when converted to signed number becomes -116. But 20 becomes 20 ...