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how can you easily check if access is denied for a file in .NET?
Basically, I would like to check if I have rights to open the file before I actually try to open it; I do not want to use a try/catch for this check unless I have to. Is there a file access property I can check before hand?
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simulate background-size:cover on or
... that it doesn't handle scaling correctly. If the surrounding element is smaller than the video file, it isn't scaled down. Even if you give the video tag a tiny initial size, like 16px by 9px, auto ends up forcing it to a minimum of its native file-size. With the current top-voted solution on this ...
.prop() vs .attr()
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Update 1 November 2012
My original answer applies specifically to jQuery 1.6. My advice remains the same but jQuery 1.6.1 changed things slightly: in the face of the predicted pile of broken websites, the jQuery team reverted attr() to something close to (but not exactly the same as...
Why is processing a sorted array faster than processing an unsorted array?
...ver have to stop.
If you guess wrong too often, you spend a lot of time stalling, rolling back, and restarting.
This is branch prediction. I admit it's not the best analogy since the train could just signal the direction with a flag. But in computers, the processor doesn't know which direction a b...
Why can't I have abstract static methods in C#?
...tantiated as such, they're just available without an object reference.
A call to a static method is done through the class name, not through an object reference, and the Intermediate Language (IL) code to call it will call the abstract method through the name of the class that defined it, not neces...
Android disable screen timeout while app is running
...an create a baseActivity and write this code in onCreate Method and extend all activity from baseActivity.
– maryam
Apr 16 '19 at 16:30
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Best way to make Java's modulus behave like it should with negative numbers?
... b) would become larger than b. Therefore, (a % b + b) % b turns it into smaller than b again (and doesn't affect negative a values).
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Insert ellipsis (…) into HTML tag if content too wide
...ollowing CSS only solution for truncating text on a single line works with all browers listed at http://www.caniuse.com as of writing with the exception of Firefox 6.0. Note that JavaScript is totally unnecessary unless you need to support wrapping multiline text or earlier versions of Firefox.
.el...
How to evaluate a math expression given in string form?
...is in a server context with user input. The executed JavaScript can access all Java classes and thus hijack your application without limit.
– Boann
Sep 21 '15 at 11:08
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Get records with max value for each group of grouped SQL results
..., age desc, Person) x
group by `Group`
This works because in mysql you're allowed to not aggregate non-group-by columns, in which case mysql just returns the first row. The solution is to first order the data such that for each group the row you want is first, then group by the columns you want the...