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Remove NA values from a vector
...he subject, see here for a good discussion of some of the issues involved, from the point of view of programmers who were engaged in incorporating R-like NA-handling facilities in Python's excellent NumPy package.)
– Josh O'Brien
Aug 2 '19 at 20:24
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How do I pass parameters to a jar file at the time of execution?
...n-Class" (mentioned in the manifest.mf file of a JAR).
String one = args[0];
String two = args[1];
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Xcode doesn't show the line that causes a crash
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301
You should also ensure that you have breakpoints set for all exceptions. This will cause Xcode...
Test if number is odd or even
...n which will return true if $number is even, false if odd:
$number % 2 == 0
Works for every integerPHP value, see as well Arithmetic OperatorsPHP.
Example:
$number = 20;
if ($number % 2 == 0) {
print "It's even";
}
Output:
It's even
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How to determine if a number is odd in JavaScript
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360
Use the below code:
function isOdd(num) { return num % 2;}
console.log("1 is " + isOdd(1))...
R programming: How do I get Euler's number?
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150
The R expression
exp(1)
represents e, and
exp(2)
represents e^2.
This works because exp i...
Assigning default value while creating migration file
...olumn :tweet, :retweets_count, :integer, :null => false, :default => 0
... and read Rails API
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What is a “slug” in Django?
...-virgin
In this example, the-46-year-old-virgin is a slug: it is created from the title by down-casing all letters, and replacing spaces by hyphens -.
Also see the URL of this very web page for another example.
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Operation on every pair of element in a list
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edited Jun 3 '09 at 18:12
answered Jun 3 '09 at 0:24
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how to change an element type using jquery
...re's one way you could do it with jQuery:
var attrs = { };
$.each($("b")[0].attributes, function(idx, attr) {
attrs[attr.nodeName] = attr.nodeValue;
});
$("b").replaceWith(function () {
return $("<h1 />", attrs).append($(this).contents());
});
Example: http://jsfiddle.net/yapHk/
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