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How do I detect unsigned integer multiply overflow?
I was writing a program in C++ to find all solutions of a b = c , where a , b and c together use all the digits 0-9 exactly once. The program looped over values of a and b , and it ran a digit-counting routine each time on a , b and ab to check if the digits condition was satisfied.
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byte[] to hex string [duplicate]
How do I convert a byte[] to a string ? Every time I attempt it, I get
19 Answers
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Fade Effect on Link Hover?
on many sites, such as http://www.clearleft.com , you'll notice that when the links are hovered over, they will fade into a different color as opposed to immediately switching, the default action.
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Why is null an object and what's the difference between null and undefined?
Why is null considered an object in JavaScript?
21 Answers
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Looping through array and removing items, without breaking for loop
I have the following for loop, and when I use splice() to remove an item, I then get that 'seconds' is undefined. I could check if it's undefined, but I feel there's probably a more elegant way to do this. The desire is to simply delete an item and keep on going.
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Standardize data columns in R
I have a dataset called spam which contains 58 columns and approximately 3500 rows of data related to spam messages.
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How to use arguments from previous command?
I know that Esc + . gives you the last argument of the last command.
11 Answers
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ReactJS: Modeling Bi-Directional Infinite Scrolling
Our application uses infinite scrolling to navigate large lists of heterogenous items. There are a few wrinkles:
3 Answers
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In Python, what is the difference between “.append()” and “+= []”?
What is the difference between:
12 Answers
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Programmatically generate video or animated GIF in Python?
I have a series of images that I want to create a video from. Ideally I could specify a frame duration for each frame but a fixed frame rate would be fine too. I'm doing this in wxPython, so I can render to a wxDC or I can save the images to files, like PNG. Is there a Python library that will al...