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Why is isNaN(null) == false in JS?
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I believe the code is trying to ask, "is x numeric?" with the specific case here of x = null. The function isNaN() can be used to answer this question, but semantically it's referring specifically to the value NaN. From Wikipedia for NaN:
NaN (Not a Number) is a value of t...
Opening the Settings app from another app
Okay, I know that there are many question about it, but they are all from many time ago.
17 Answers
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Is it possible to use AutoLayout with UITableView's tableHeaderView?
Since I discovered AutoLayout I use it everywhere, now I'm trying to use it with a tableHeaderView .
29 Answers
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Switch statement fallthrough in C#?
Switch statement fallthrough is one of my personal major reasons for loving switch vs. if/else if constructs. An example is in order here:
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Creating an abstract class in Objective-C
I'm originally a Java programmer who now works with Objective-C. I'd like to create an abstract class, but that doesn't appear to be possible in Objective-C. Is this possible?
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Image Processing: Algorithm Improvement for 'Coca-Cola Can' Recognition
...the word 'cans', you'll see why in a minute). You can see a sample below, with the can recognized in the green rectangle with scale and rotation.
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Sending event when AngularJS finished loading
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Just a hunch: why not look at how the ngCloak directive does it? Clearly the ngCloak directive manages to show content after things have loaded. I bet looking at ngCloak will lead to the exact answer...
EDIT 1 hour later:
Ok, well, I looked at ngCloak and it's really short. What this ...
How to randomize (shuffle) a JavaScript array?
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The de-facto unbiased shuffle algorithm is the Fisher-Yates (aka Knuth) Shuffle.
See https://github.com/coolaj86/knuth-shuffle
You can see a great visualization here (and the original post linked to this)
function shuffle(array) {
var currentIndex = ...
Repeat String - Javascript
...t is the best or most concise method for returning a string repeated an arbitrary amount of times?
30 Answers
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Can vim monitor realtime changes to a file
My question is similar to this how to monitor a text file in realtime
but I want to do it in vim. I know I can read an opened file use tail -f sample.xml file, and when new content is written to the file, it'll also write the new content to my screen. Can I have vim automatically fill the new da...