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When would you use a WeakHashMap or a WeakReference?
...th user-supplied images, like the
web site design tool I work on.
Naturally you want to cache these
images, because loading them from disk
is very expensive and you want to
avoid the possibility of having two
copies of the (potentially gigantic)
image in memory at once.
Because an...
How do you detect the clearing of a “search” HTML5 input?
...Javascript or jQuery other than, say, detecting when the box is clicked at all or doing some sort of location click-detecting (x-position/y-position)?
...
Is there a way to make git pull automatically update submodules?
Is there a way to automatically have git submodule update (or preferably git submodule update --init called whenever git pull is done?
...
Is there a performance impact when calling ToList()?
...on) constructor. This constructor must make a copy of the array (more generally IEnumerable<T>), otherwise future modifications of the original array will change on the source T[] also which wouldn't be desirable generally.
I would like to reiterate this will only make a difference with a hu...
Why is there an “Authorization Code” flow in OAuth2 when “Implicit” flow works so well?
...
tl;dr: This is all because of security reasons.
OAuth 2.0 wanted to meet these two criteria:
You want to allow developers to use non-HTTPS redirect URI because not all developers have an SSL enabled server and if they do it's not always ...
What integer hash function are good that accepts an integer hash key?
...mple) and has no common factors with it. This way the hash function covers all your hash space uniformly.
Edit: The biggest disadvantage of this hash function is that it preserves divisibility, so if your integers are all divisible by 2 or by 4 (which is not uncommon), their hashes will be too. Thi...
Parse string to DateTime in C#
...teTime.Parse() will try figure out the format of the given date, and it usually does a good job. If you can guarantee dates will always be in a given format then you can use ParseExact():
string s = "2011-03-21 13:26";
DateTime dt =
DateTime.ParseExact(s, "yyyy-MM-dd HH:mm", CultureInfo.Invar...
“Inspect” a hover element?
...
If the hover effect is given with CSS then yes, I normally use two options to get this:
One, to see the hover effect when the mouse leave the hover area:
Open the inspector in docked window and increase the width until reach your HTML element, then right click and the popup men...
How to parse a string to an int in C++?
...g. ss << std::hex) before trying the conversion. But this means the caller must know a priori what base the number is -- and how can the caller possibly know that? The caller doesn't know what the number is yet. They don't even know that it is a number! How can they be expected to know what ba...
jQuery pitfalls to avoid [closed]
...ed");
});
I found this the enlightening moment when I realized how the call stacks work.
Edit: incorporated suggestions in comments.
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