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What is the fastest way to compare two sets in Java?

... firstSet.equals(secondSet) It really depends on what you want to do in the comparison logic... ie what happens if you find an element in one set not in the other? Your method has a void return type so I assume you'll do the necessary work in this method. M...
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Prevent users from submitting a form by hitting Enter

...be some issues with the users hitting enter (I don't know why) and accidentally submitting the survey (form) without clicking the submit button. Is there a way to prevent this? ...
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Payment Processors - What do I need to know if I want to accept credit cards on my website? [closed]

... with my own business. If you have some network technical knowledge, it really isn't that bad. Otherwise you will be better off using Paypal or another type of service. The process starts by getting a merchant account setup and tied to your bank account. You may want to check with your bank, bec...
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How do I clone a generic list in C#?

... I think List.ConvertAll might do this in faster time, since it can pre-allocate the entire array for the list, versus having to resize all the time. – MichaelGG Oct 21 '08 at 17:43 ...
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Why does document.querySelectorAll return a StaticNodeList rather than a real Array?

It bugs me that I can't just do document.querySelectorAll(...).map(...) even in Firefox 3.6, and I still can't find an answer, so I thought I'd cross-post on SO the question from this blog: ...
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Is there a destructor for Java?

...re is no direct equivalent of a destructor. There is an inherited method called finalize, but this is called entirely at the discretion of the garbage collector. So for classes that need to explicitly tidy up, the convention is to define a close method and use finalize only for sanity checking (i.e...
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How to scroll up or down the page to an anchor using jQuery?

... This can also be made generic to work with all internal anchor links in the page: $("a[href^=#]").click(function(e) { e.preventDefault(); var dest = $(this).attr('href'); console.log(dest); $('html,body').animate({ scrollTop: $(dest).offset().top }, 'slow'); }...
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Is there an ExecutorService that uses the current thread?

...after is a compatible way to configure the use of a thread pool or not. Ideally the rest of the code should not be impacted at all. I could use a thread pool with 1 thread but that isn't quite what I want. Any ideas? ...
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Why should I use 'li' instead of 'div'?

...xpress lists of things, and it helps the Google robot, screen readers, and all manner of users who don't care solely about the presentation of the site understand your content better. share | improv...
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Understanding the meaning of the term and the concept - RAII (Resource Acquisition is Initialization

... So why isn't that called "using the stack to trigger cleanup" (UTSTTC:)? RAII is telling you what to do: Acquire your resource in a constructor! I would add: one resource, one constructor. UTSTTC is just one application of that, RAII is much ...