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Is it more efficient to copy a vector by reserving and copying, or by creating and swapping? [duplic
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@rlbond Accidentally downvoted the answer :(, Can you please edit the post, so that i can remove the downvote and give the upvote?
– Shubham Sharma
Jul 24 at 17:32
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What is memoization and how can I use it in Python?
...orials using memoization in Python would be something like this:
factorial_memo = {}
def factorial(k):
if k < 2: return 1
if k not in factorial_memo:
factorial_memo[k] = k * factorial(k-1)
return factorial_memo[k]
You can get more complicated and encapsulate the memoization...
Populating a ListView using an ArrayList?
... @ Amokrane Chentir: I think that the "setContentView" method must be called before "findViewById" or else no ListView will be found.
– Petru
Jun 26 '12 at 20:36
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Executing elements inserted with .innerHTML
...ad via src. The above script can be changed to check elem.src and conditionally set the src property of the created script element instead of setting its text content.
– Ryan Morlok
Nov 9 '15 at 15:27
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Calling method using JavaScript prototype
Is it possible to call the base method from a prototype method in JavaScript if it's been overridden?
14 Answers
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C++ catching all exceptions
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try{
// ...
} catch (...) {
// ...
}
will catch all C++ exceptions, but it should be considered bad design. You can use c++11's new current_exception mechanism, but if you don't have the ability to use c++11 (legacy code systems requiring a rewrite), then you have no name...
How to add a new method to a php object on the fly?
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You can harness __call for this:
class Foo
{
public function __call($method, $args)
{
if (isset($this->$method)) {
$func = $this->$method;
return call_user_func_array($func, $args);
}
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What's the purpose of using braces (i.e. {}) for a single-line if or loop?
...le is editor-agnostic beyond what you need, but not beyond what people actually use to edit C++. Hence "defensive".
– Steve Jessop
Aug 30 '12 at 10:11
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Check if object is a jQuery object
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isn't obj.__proto__.jquery instead of obj.constructor.prototype.jquery enough? just a bit short :)
– Axel
Jul 3 '17 at 9:35
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Checking if array is multidimensional or not?
...will recursively count the array. This is particularly useful for counting all the elements of a multidimensional array. count() does not detect infinite recursion.
However this method does not detect array(array()).
share...