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How to detect page zoom level in all modern browsers?
...ses and blog posts I could find, here's a summary. I also set up this page to test all these methods of measuring the zoom level.
Edit (2011-12-12): I've added a project that can be cloned: https://github.com/tombigel/detect-zoom
IE8: screen.deviceXDPI / screen.logicalXDPI (or, for the zoom level...
Pass a data.frame column name to a function
I'm trying to write a function to accept a data.frame ( x ) and a column from it. The function performs some calculations on x and later returns another data.frame. I'm stuck on the best-practices method to pass the column name to the function.
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Can you find all classes in a package using reflection?
Is it possible to find all classes or interfaces in a given package? (Quickly looking at e.g. Package , it would seem like no.)
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TypeError: 'NoneType' object is not iterable in Python
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Correct, But the common scenario author intended here is totally to skip the for loop instead of raising an exception. Python's design is flawed here. When None is treated as an iterable it must return empty list at least. This exception never helped anyone in real life other tha...
Eclipse Android and gitignore
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There are file types to ignore
# built application files
*.apk
*.ap_
# files for the dex VM
*.dex
# Java class files
*.class
# generated files
bin/
gen/
# Local configuration file (sdk path, etc)
local.properties
# Eclipse project files
.cl...
What's Pros and Cons: putting javascript in head and putting just before the body close
...ticles says that you must put CSS in the head tag and javascript at the bottom of the page.
5 Answers
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Jenkins / Hudson environment variables
I am running Jenkins from user jenkins thats has $PATH set to something and when I go into Jenkins web interface, in the System Properties window ( http://$host/systemInfo ) I see a different $PATH .
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Multiple inheritance/prototypes in JavaScript
I've come to a point where I need to have some sort of rudimentary multiple inheritance happening in JavaScript. (I'm not here to discuss whether this is a good idea or not, so please kindly keep those comments to yourself.)
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Script Tag - async & defer
... about the attributes async & defer for the <script> tag which to my understanding only work in HTML5 browsers.
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How do I copy an object in Java?
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Create a copy constructor:
class DummyBean {
private String dummy;
public DummyBean(DummyBean another) {
this.dummy = another.dummy; // you can access
}
}
Every object has also a clone method which can be used to copy the object, b...