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What is the difference between Θ(n) and O(n)?
...e of the algorithm as n gets larger is at most proportional to g(n).
Normally, even when people talk about O(g(n)) they actually mean Θ(g(n)) but technically, there is a difference.
More technically:
O(n) represents upper bound. Θ(n) means tight bound.
Ω(n) represents lower bound.
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How to remove multiple deleted files in Git repository
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Another version to ByScripts answer is
git rm $(git ls-files --deleted)
This will ONLY remove the deleted files from the git.
It could be also be used for adding ONLY modified files also.
git add $(git ls-files --modified)
These commands ...
SVN checkout ignore folder
... these are unix shell commands (they can also be saved and executed as a script file)
– mrlem
Sep 19 '14 at 14:40
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Get the current first responder without using a private API
...that my app cannot be accepted because I'm using a non-public API; specifically, it says,
28 Answers
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Submitting a multidimensional array via POST with php
...u would read the previous input name after cloning, and increment by 1 manually for each input name attribute in the clone.
– Daniel
Nov 18 '18 at 0:04
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What is `related_name` used for in Django?
... back to your model.
If you don't specify a related_name, Django automatically creates one using the name of your model with the suffix _set, for instance User.map_set.all().
If you do specify, e.g. related_name=maps on the User model, User.map_set will still work, but the User.maps. syntax is ob...
_DEBUG vs NDEBUG
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+1. NDEBUG in particular is allowed to be #undef'd and #define'd within a single TU (and reincluding <assert.h> changes the assert macro accordingly). Because this is different than expected/desired, it's common to use another macro to control a ...
Python extract pattern matches
...h a standard python REPL, the last result is stored in a special variable called _. It isn't valid outside anywhere else.
– UltraInstinct
Mar 13 '19 at 2:25
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How can I find unused images and CSS styles in a website? [closed]
...heet and either a list of URLs or a directory of HTML files. Here's the description given on the tool's site:
A simple script that, given a CSS stylesheet and either a .txt file
listing URLs of HTML files, or a directory of HTML files, will iterate
over them all and list the CSS statements ...
What are the advantages of NumPy over regular Python lists?
... Python objects, at least 4 bytes per pointer plus 16 bytes for even the smallest Python object (4 for type pointer, 4 for reference count, 4 for value -- and the memory allocators rounds up to 16). A NumPy array is an array of uniform values -- single-precision numbers takes 4 bytes each, double-pr...