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Checking images for similarity with OpenCV
...) that indicates how similar these images are? E.g. 100% would be returned if the same image was passed twice, 0% would be returned if the images were totally different.
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How to set a default value for an existing column
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+1 for specifying a constraint name, so SQL Server doesn't create a random one.
– HardCode
Jul 22 '11 at 15:25
38
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Center content of UIScrollView when smaller
...IImageView inside a UIScrollView which I use for zooming and scrolling. If the image / content of the scroll view is bigger than the scroll view, everything works fine. However, when the image becomes smaller than the scroll view, it sticks to the top left corner of the scroll view. I would like ...
Checking if a variable is an integer
Does Rails 3 or Ruby have a built-in way to check if a variable is an integer?
11 Answers
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What's the difference between BaseAdapter and ArrayAdapter?
I want to know the difference between using BaseAdapter and ArrayAdapter .
6 Answers
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How do I remove duplicates from a C# array?
...call. I could possibly cast to a Generic collection, but I was wondering if there was a better way to do it, possibly by using a temp array.
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PHP function overloading
...cannot have two functions with the same name. Class method overloading is different in PHP than in many other languages. PHP uses the same word but it describes a different pattern.
You can, however, declare a variadic function that takes in a variable number of arguments. You would use func_num_ar...
kill -3 to get java thread dump
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Yes - at the point in time it is run. You can also specify -l (lowercase L) for a long listing that prints additional lock information
– Joshua McKinnon
Feb 2 '11 at 18:44
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Create a custom callback in JavaScript
...e advanced stuff
Sometimes you want to call the callback so it sees a specific value for this. You can easily do that with the JavaScript call function:
function Thing(name) {
this.name = name;
}
Thing.prototype.doSomething = function(callback) {
// Call our callback, but using our own ins...
Change the name of a key in dictionary
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dictionary[new_key] = dictionary.pop(old_key)
which will raise KeyError if dictionary[old_key] is undefined. Note that this will delete dictionary[old_key].
>>> dictionary = { 1: 'one', 2:'two', 3:'three' }
>>> dictionary['ONE'] = dictionary.pop(1)
>>> dictionary
{2: '...