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What are the differences between NP, NP-Complete and NP-Hard?
...r of n (the certificate), we can check the answer in polynomial time by performing the division n / f.
NP-Complete
NP-Complete is a complexity class which represents the set of all problems X in NP for which it is possible to reduce any other NP problem Y to X in polynomial time.
Intuitively th...
Get selected value of a dropdown's item using jQuery
...xt();
return my;
}
It saves me a ton of precious time, especially on form-heavy applications!
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jQuery access input hidden value
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There's a jQuery selector for that:
// Get all form fields that are hidden
var hidden_fields = $( this ).find( 'input:hidden' );
// Filter those which have a specific type
hidden_fields.attr( 'text' );
Will give you all hidden input fields and filter by those with a sp...
What is the most effective way for float and double comparison?
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I found that the Google C++ Testing Framework contains a nice cross-platform template-based implementation of AlmostEqual2sComplement which works on both doubles and floats. Given that it is released under the BSD license, using it in your own code should be no problem, as long as you retain the ...
Javascript regex returning true.. then false.. then true.. etc [duplicate]
I have a strange problem with the validation I am writing on a form. It is a 'Check Username' button next to an input. The input default value is the username for example 'betamax'. When I press 'Check Username' it passes the regex and sends the username to the server. The server behaves as expected...
Converting Integer to String with comma for thousands
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System.out.println(NumberFormat.getNumberInstance(Locale.US).format(35634646));
Output: 35,634,646
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How do JavaScript closures work?
...reated. This chain is called the scope chain.
In the following code, inner forms a closure with the lexical environment of the execution context created when foo is invoked, closing over variable secret:
function foo() {
const secret = Math.trunc(Math.random()*100)
return function inner() {
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Is there any difference between “!=” and “” in Oracle Sql?
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Actually, there are four forms of this operator:
<>
!=
^=
and even
¬= -- worked on some obscure platforms in the dark ages
which are the same, but treated differently when a verbatim match is required (stored outlines or cached queries)....
How can I initialize a String array with length 0 in Java?
...I take your point, but for this particular case I prefer the more explicit form. It's clearer to me that it means "I want a string array with 0 elements" rather than "I want an array with this content - which is empty". Just personal preference I guess.
– Jon Skeet
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ASP.NET MVC: What is the purpose of @section? [closed]
... a way for you to adjust your shared view (similar to a Master Page in Web Forms).
You might find Scott Gu's write up on this very interesting.
Edit: Based on additional question clarification
The @RenderSection syntax goes into the Shared View, such as:
<div id="sidebar">
@RenderSecti...