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How to cast Object to its actual type?
...
If you know the actual type, then just:
SomeType typed = (SomeType)obj;
typed.MyFunction();
If you don't know the actual type, then: not really, no. You would have to instead use one of:
reflection
implementing a well-known inte...
Is there a common Java utility to break a list into batches?
...lf a utility to break a list into batches of given size. I just wanted to know if there is already any apache commons util for this.
...
Determining whether jQuery has not found any element
...t(0) !== undefined
$('#my_selector')[0] !== undefined
This is the basic, now do whatever you want.
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Why does 1==1==1 return true, “1”==“1”==“1” return true, and “a...
...o being compared to true and is thus also considered to be equal to true.
Now, the "WHY?!?!" question is explained by the fact that Javascript has its roots in the C-family of languages. In which any number, other than 0 is considered to be a valid true boolean. :-/
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Why is division in Ruby returning an integer instead of decimal value?
... I've built a prime number generator in Ruby in order to learn the syntax, now I'm optimizing it to learn what works best. Here's the benchmark I put together: require 'base64';require 'zlib';puts Zlib.inflate(Base64.decode64("eJxlkMEOwiAQRO98hekFuGzxQEwPXvwR01ZqiYHqBk2Tln8XDlWgnDbM25nJonq9NaoD7ZTtR...
How to reset radiobuttons in jQuery so that none is checked
...y value. You will see an alert");
}
Note 2: As of jQuery 1.6.0, there are now two similar methods, .attr and .prop that do two related but slightly different things. If in this particular case, the advice provide above works if you use 1.6.1+. The above will not work with 1.6.0, if you are using 1....
Get mouse wheel events in jQuery?
...ion() {
var supportOffset = window.pageYOffset !== undefined,
lastKnownPos = 0,
ticking = false,
scrollDir,
currYPos;
function doSomething(scrollPos, scrollDir) {
// Your code goes here...
console.log('scroll pos: ' + scrollPos + ' | scroll dir: ' + scrollDir);
...
How can I use threading in Python?
...nction are provided by two libraries:multiprocessing, and also its little known, but equally fantastic step child:multiprocessing.dummy.
multiprocessing.dummy is exactly the same as multiprocessing module, but uses threads instead (an important distinction - use multiple processes for CPU-intensive...
How can I mock dependencies for unit testing in RequireJS?
...ems like it's only working if I mock out all of the dependencies. Do you know of a way to return the mock objects if they are there, but fallback to retrieving from the actual .js file if a mock is not provided? I've been trying to dig through the require code to figure it out, but I'm getting a l...
Call by name vs call by value in Scala, clarification needed
...def something() = {
println("calling something")
1 // return value
}
Now we are going to define two function that accept Int arguments that are exactly the same except that one takes the argument in a call-by-value style (x: Int) and the other in a call-by-name style (x: => Int).
def callB...