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Why does ++[[]][+[]]+[+[]] return the string “10”?
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If we split it up, the mess is equal to:
++[[]][+[]]
+
[+[]]
In JavaScript, it is true that +[] === 0. + converts something into a number, and in this case it will come down to +"" or 0 (see specification details below).
Therefore...
Why are static variables considered evil?
...n application using Groovy and Java. All through the code I wrote used quite a good number of statics. I was asked by the senior technical lot to cut down on the number of statics used. I've googled about the same, and I find that many programmers are fairly against using static variables.
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Programmatically get own phone number in iOS
...K Agreement as of Nov 5, 2009. Our application was just rejected for using it. Here's the response from Apple:
"For security reasons, iPhone OS restricts an application (including its preferences and data) to a unique location in the file system. This restriction is part of the security feature kno...
Setting the correct encoding when piping stdout in Python
...thon program, the Python interpreter gets confused about encoding and sets it to None. This means a program like this:
10 A...
Checkout another branch when there are uncommitted changes on the current branch
Most of the time when I try to checkout another existing branch, Git doesn't allow me if I have some uncommitted changes on the current branch. So I'll have to commit or stash those changes first.
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Using global variables in a function
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You can use a global variable within other functions by declaring it as global within each function that assigns a value to it:
globvar = 0
def set_globvar_to_one():
global globvar # Needed to modify global copy of globvar
globvar = 1
def prin...
How to add elements to an empty array in PHP?
If I define an array in PHP such as (I don't define its size):
8 Answers
8
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python generator “send” function purpose?
Can someone give me an example of why the "send" function associated with Python generator function exists? I fully understand the yield function. However, the send function is confusing to me. The documentation on this method is convoluted:
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What is aria-label and how should I use it?
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It's an attribute designed to help assistive technology (e.g. screen readers) attach a label to an otherwise anonymous HTML element.
So there's the <label> element:
<label for="fmUserName">Your name</label&g...
Eclipse IDE for Java - Full Dark Theme
... dark theme I have ever seen for Eclipse!
Just follow the steps on the website and Enjoy!
https://github.com/guari/eclipse-ui-theme
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