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How to find keys of a hash?
... : 3};
alert(Object.keys(obj)); // will output ["a", "b", "c"]
Compatibility details can be found here.
On the Mozilla site there is also a snippet for backward compatibility:
if(!Object.keys) Object.keys = function(o){
if (o !== Object(o))
throw new TypeError('Object.keys called on no...
Global variables in Java
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edited May 26 '14 at 15:49
golddove
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Why do Python's math.ceil() and math.floor() operations return floats instead of integers?
...what should floor(1.0e30) return?
Now, while Python's integers are now arbitrary precision, it wasn't always this way. The standard library functions are thin wrappers around the equivalent C library functions.
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How to get the width and height of an android.widget.ImageView?
I have an image view with some default height and width, images are stored in db and I want to scale Image according to Imageview height width. As I don't want it give default values because when ever I change it's height and width I also have to change it in code.
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How to implement history.back() in angular.js
I have directive which is site header with back button and I want on click to go back to the previous page. How do I do it in the angular way?
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Android: Remove all the previous activities from the back stack
When i am clicking on Logout button in my Profile Activity i want to take user to Login page, where he needs to use new credentials.
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Perform debounce in React.js
...nent
react-async-hook to get the result into my component
This is some initial wiring but you are composing primitive blocks on your own, and you can make your own custom hook so that you only need to do this once.
// Generic reusable hook
const useDebouncedSearch = (searchFunction) => {
//...
Assigning variables with dynamic names in Java
...teger>();
for (int i = 1; i < 4; i++) {
n.put("n" + i, 5);
}
It is possible to use reflection to dynamically refer to variables that have been declared in the source code. However, this only works for variables that are class members (i.e. static and instance fields). It doesn't work...
How do I get a class instance of generic type T?
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edited Aug 9 '10 at 7:09
answered Aug 9 '10 at 7:03
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What would cause an algorithm to have O(log n) complexity?
My knowledge of big-O is limited, and when log terms show up in the equation it throws me off even more.
6 Answers
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