Get unique values from a list in python [duplicate]

First declare your list properly, separated by commas. You can get the unique values by converting the list to a set. If you use it further as a list, you should convert it back to a list by doing: Another possibility, probably faster would be to use a set from the beginning, instead of a … Read more

Can’t fix “zipimport.ZipImportError: can’t decompress data; zlib not available” when I type in “python3.6 get-pip.py”

I also came across this problem (while creating a simple installer for pyenv). Here’s how I solved it for Mac and Linux: Ubuntu 20.04, 18.04 You need the zlib development files, and probably zlib itself too: If you’re missing zlib, it’s likely that the next problem you’ll run into is with openssl, so it’s probably best to get … Read more

Is there a maxheap in the C++ standard library?

Regarding std::priority_queue: A user-provided Compare can be supplied to change the ordering, e.g. using std::greater<T> would cause the smallest element to appear as the top(). Since std::less<T> is the default template argument to the Compare template parameter, it is already a max heap by default. If you want a min heap instead (what the quote above suggest), pass std::greater<T> instead of std::less<T> as the template argument. To summarize: Max Heap: pass std::less<T> (this is the default template … Read more

How does functools partial do what it does?

Roughly, partial does something like this (apart from keyword args support etc): So, by calling partial(sum2, 4) you create a new function (a callable, to be precise) that behaves like sum2, but has one positional argument less. That missing argument is always substituted by 4, so that partial(sum2, 4)(2) == sum2(4, 2) As for why it’s needed, there’s a variety of cases. … Read more

How can I scroll to an element using jQuery?

JavaScript answer If you would like to scroll to an element smoothly with “pure JavaScript” you could do something like this: More information is here: Element.scrollIntoView() NOTE: Please see Can I use… Support tables for HTML5, CSS3, etc. for the latest browser support… jQuery answer If you would like to scroll to an element smoothly using jQuery then … Read more