Understanding the difference between indexing and slicing: Wiki Python has this amazing picture which clearly distinguishes indexing and slicing. It is a list with six elements in it. To …

The method you used is called Slicing in Python. Slicing syntax in python is as follows, [ <first element to include> : <first element to exclude> : <step> ] where adding the step part is …

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Jan 2, 2009 · this approach is at least 50x slower than Array.Copy. This isn't an issue in many situations but when doing array slicing in a cycle, the performance drop is very obvious.

Aug 31, 2016 · Sure, the specific example of selecting alternate characters may not be relevant to the question, but understanding there is a 3rd parameter to slicing very much is relevant and …

May 19, 2012 · Here's how you could use different methods to do selective column slicing, including selective label based, index based and the selective ranges based column slicing.

This creates a new list, it doesn't trim the existing one. To trim in-place, use del on a slice; e.g. del listobj[-x:] will remove the last x elements from the list object.

On the other hand, df.head being DataFrame specific, it might contain DataFrame specific optimizations that make it more efficient than simple slicing, in fact, a quick look at the source …

140 Python docs says that slicing a list returns a new list. Now if a "new" list is being returned I've the following questions related to "Assignment to slices"

It looks like C++20 will have Ranges which are designed to provide, amongst other things, Python-like slicing. So I'm waiting for it to land in my favorite compiler, and meanwhile use …