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Omit rows containing specific column of NA
...ses function and put it into a function thusly:
DF <- data.frame(x = c(1, 2, 3), y = c(0, 10, NA), z=c(NA, 33, 22))
completeFun <- function(data, desiredCols) {
completeVec <- complete.cases(data[, desiredCols])
return(data[completeVec, ])
}
completeFun(DF, "y")
# x y z
# 1 1 0 ...
Chrome's remote debugging (USB debugging) not working for Samsung Galaxy S3 running android 4.3
Ever since I upgraded my Samsung Galaxy S3 to android 4.3 (from 4.1.2) I am unable to use Chrome's remote debugging for android (more details here ).
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Which commit has this blob?
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107
Both of the following scripts take the blob’s SHA1 as the first argument, and after it, opti...
Why is not in HTML 5 Tag list while is?
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194
Remember, the tags are meant to be semantic, not presentational. There is such a thing in Engl...
String.Join method that ignores empty strings?
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174
VB.NET
String.Join(",", myArray.Where(Function(s) Not String.IsNullOrEmpty(s)))
C#
String.J...
The Ruby %r{ } expression
...t
\s # white space char
(group) # first group
(?:alt1|alt2) # some alternation
end
}x
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How to get visitor's location (i.e. country) using geolocation? [duplicate]
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edited May 18 at 15:28
Laurent
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Insert a line break in mailto body
...A. Nothing worked for me.
I tested on Gmail, Yahoo, Apple Mail, Outlook 2010, Outlook.com and Thunderbird with Google Chrome on Mac OSX.
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jQuery - checkbox enable/disable
...ange your markup slightly:
$(function() {
enable_cb();
$("#group1").click(enable_cb);
});
function enable_cb() {
if (this.checked) {
$("input.group1").removeAttr("disabled");
} else {
$("input.group1").attr("disabled", true);
}
}
<script src="https://cdnjs.clou...
How do you find the sum of all the numbers in an array in Java?
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271
In java-8 you can use streams:
int[] a = {10,20,30,40,50};
int sum = IntStream.of(a).sum();
Sys...