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Difference between Django's annotate and aggregate methods?
Django's QuerySet has two methods, annotate and aggregate . The documentation says that:
3 Answers
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How can I convert a file pointer ( FILE* fp ) to a file descriptor (int fd)?
I have a FILE * , returned by a call to fopen() . I need to get a file descriptor from it, to make calls like fsync(fd) on it. What's the function to get a file descriptor from a file pointer?
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How to remove an element slowly with jQuery?
$target.remove() can remove the element,but now I want the process to be down with some feel animation,how to do it?
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Smart way to truncate long strings
Does anyone have a more sophisticated solution/library for truncating strings with JavaScript and putting an ellipsis on the end, than the obvious one:
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Groovy / grails how to determine a data type?
What is the best way to determine the data type in groovy?
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Responsive image align center bootstrap 3
I do a catalog using Bootstrap 3. When displayed on tablets, the product images look ugly because of their small size (500x500) and a width of 767 pixels in the browser. I want to put the image in the center of the screen, but for some reason I can not. Who be will help solve the problem?
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Copy object values in Visual Studio debug mode
In Visual Studio debug mode it's possible to hover over variables to show their value and then right-click to "Copy", "Copy Expression" or "Copy Value".
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How to increment a pointer address and pointer's value?
Let us assume,
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How to wait for 2 seconds?
How does one cause a delay in execution for a specified number of seconds?
4 Answers
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How can I use numpy.correlate to do autocorrelation?
I need to do auto-correlation of a set of numbers, which as I understand it is just the correlation of the set with itself.
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