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Remove NA values from a vector
...'s the common default for many other R 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 functi...
Programmatically trigger “select file” dialog box
...ility having "display: none" is not ok in all browsers. (But opacity of 0, etc, can be used)
– driftcatcher
Dec 7 '19 at 16:41
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How do I get the file extension of a file in Java?
... just the path, the parent directory, the file name (minus the extension), etc. I'm coming from C# and .Net where we have this: msdn.microsoft.com/en-us/library/…
– longda
Aug 26 '10 at 0:31
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How can a Java program get its own process ID?
...s
Make sure you have jna-platform.jar then:
int pid = Kernel32.INSTANCE.GetCurrentProcessId();
Unix
Declare:
private interface CLibrary extends Library {
CLibrary INSTANCE = (CLibrary) Native.loadLibrary("c", CLibrary.class);
int getpid ();
}
Then:
int pid = CLibrary.INSTANCE.get...
How do I rename the extension for a bunch of files?
...h, there's no need for external commands like sed, basename, rename, expr, etc.
for file in *.html
do
mv "$file" "${file%.html}.txt"
done
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fo...
How to extract base URL from a string in JavaScript?
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There is no reason to do splits to get the path, hostname, etc from a string that is a link. You just need to use a link
//create a new element link with your link
var a = document.createElement("a");
a.href="http://www.sitename.com/article/2009/09/14/this-is-an-article/";
//hide it...
Android Drawing Separator/Divider Line in Layout?
... Works for me too. Can also add android:layout_marginTop="2dp" (etc) to add spaces in top and bottom.
– Pinch
May 7 '12 at 3:43
4
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Binding multiple events to a listener (without JQuery)?
...nction body...
console.log("you inserted things by paste or typing etc.");
});
}
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Mocking python function based on input arguments
...f you want to preserve Mock's capabilities (assert_called_once, call_count etc):
self.mock.side_effect = {'input1': 'value1', 'input2': 'value2'}.get
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Attach parameter to button.addTarget action in Swift
... Really useful for including things like urls, confirm message methodology etc
As an aside, it's important that the SO community realise this there is an entire generation of bad practice being cut'n'paste round the internet by an alarming number of programmers who don't understand/haven't been tau...