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Python list subtraction operation
...] gives [1,1] So it is not really list substraction, it is more like "List from List X without elements from set Y".
– Alfred Zien
Feb 6 '16 at 10:25
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How to use the IEqualityComparer
...lass to do this work, but the execution of the function causes a big delay from the function without distinct, from 0.6 sec to 3.2 sec!
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knitr Markdown highlighting in Emacs?
...ter markdown.el. Besides, if all you want is to just switch the ESS engine from Sweave to knitr (without highlighting!), there is no need to go through all the complication of this article, just add (setq ess-swv-processor 'knitr) in you init file.
– antonio
De...
Purpose of #!/usr/bin/python3
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That's called a hash-bang. If you run the script from the shell, it will inspect the first line to figure out what program should be started to interpret the script.
A non Unix based OS will use its own rules for figuring out how to run the script. Windows for example will...
Best way to initialize (empty) array in PHP
...s to the array, preserving the items that were already there.
Having come from other languages, this way of appending to an array seemed strange to me. I expected to have to do something like $myArray += "dog" or something... or maybe an "add()" method like Visual Basic collections have. But this d...
iReport not starting using JRE 8
...ons installed you can do the following:
1) Download the iReport-5.6.0.zip from https://sourceforge.net/projects/ireport/files/iReport/iReport-5.6.0/
2) Download jre-7u67-windows-x64.tar.gz (the one packed in a tar) from https://www.oracle.com/technetwork/java/javase/downloads/java-archive-download...
How to efficiently compare two unordered lists (not sets) in Python?
...,000 ints with 5 repeats, Counter is 4x faster. python3.6 -m timeit -s 'from collections import Counter' -s 'from random import shuffle' -s 't=list(range(100)) * 5' -s 'shuffle(t)' -s 'u=t[:]' -s 'shuffle(u)' 'Counter(t)==Counter(u)'
– Raymond Hettinger
Oct ...
Convert a PHP script into a stand-alone windows executable
...fairly simple task. For this I have written a small PHP script which I run from the command line using PHP-CLI. Now I want to hand over this script to someone but I do not want to:
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ASP.NET Identity's default Password Hasher - How does it work and is it secure?
...hrow new ArgumentNullException("password");
}
byte[] src = Convert.FromBase64String(hashedPassword);
if ((src.Length != 0x31) || (src[0] != 0))
{
return false;
}
byte[] dst = new byte[0x10];
Buffer.BlockCopy(src, 1, dst, 0, 0x10);
byte[] buffer3 = new byte[0x2...
How to change the ROOT application?
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There are three methods:
First shutdown your Tomcat from the its bin directory (sh shutdown.sh). Then delete all the content of your Tomcat webapps folder (rm -fr *). Then rename your WAR file to ROOT.war, and finally start your Tomcat from the bin directory (sh startup.sh).
L...