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Fast permutation -> number -> permutation mapping algorithms
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("The Lehmer code (inversion table)", p.232ff) of the fxtbook:
http://www.jjj.de/fxt/#fxtbook
skip to section 10.1.1.1 ("Computation with large arrays" p.235) for the fast method.
The (GPLed, C++) code is on the same web page.
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How can I add a table of contents to a Jupyter / JupyterLab notebook?
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Here is one more option without too much JS hassle: https://github.com/kmahelona/ipython_notebook_goodies
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How to make PowerShell tab completion work like Bash
...istory to get auto suggestion. Refer to the YouTube video for more details
https://youtu.be/I0iIZe0dUNw
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Why doesn't JUnit provide assertNotEquals methods?
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There is an assertNotEquals in JUnit 4.11: https://github.com/junit-team/junit/blob/master/doc/ReleaseNotes4.11.md#improvements-to-assert-and-assume
import static org.junit.Assert.assertNotEquals;
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Javascript reduce() on Object
... rely on the order when you're iterating the properties of an object (see: https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Statements/for...in, this is applied to Object.keys too); so I'm not sure if applying reduce over an object makes sense.
However, if the order is not important, y...
Diff Algorithm? [closed]
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See https://github.com/google/diff-match-patch
"The Diff Match and Patch libraries
offer robust algorithms to perform the
operations required for synchronizing
plain text. ... Currently available
in Java, JavaScript,...
How to show the “Are you sure you want to navigate away from this page?” when changes committed?
...load = function(e) {
return "Sure you want to leave?";
};
Reference: https://developer.mozilla.org/en/DOM/window.onbeforeunload
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How do I show the value of a #define at compile-time?
... GCC terminology seems to have changed, and with it the URL, which is now https://gcc.gnu.org/onlinedocs/cpp/Stringizing.html#Stringizing
– Chris Barry
Aug 29 '19 at 11:14
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Display name of the current file in vim?
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I use the amazing vimrc from amix: https://github.com/amix/vimrc
It uses the lightline.vim pluging and displays the filename on the status bar.
The great thing about using the amix/vimrc is that this plugin takes care of most of the customization, its very ...
How can I debug git/git-shell related problems?
...ssh to validate your credentials, e.g.
ssh -vvvT git@github.com
or over HTTPS port:
ssh -vvvT -p 443 git@ssh.github.com
Note: Reduce number of -v to reduce the verbosity level.
Examples
$ GIT_TRACE=1 git status
20:11:39.565701 git.c:350 trace: built-in: git 'status'
$ GIT_TR...