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Making heatmap from pandas DataFrame

...t instead of %matplotlib inline and finish with plt.show() in order to actually see the plot. – tsveti_iko Jul 23 '19 at 15:19 ...
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Grunt watch error - Waiting…Fatal error: watch ENOSPC

... In my case my problem seems to be to have Dropbox installed which seems to use a lot of watches. So I had to use: fs.inotify.max_user_watches=524288 | sudo tee -a /etc/sysctl.conf && sudo sysctl -p as in the accepted answer, but +1 for teach me npm dedupe ...
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Github: error cloning my private repository

...w64-i686-ca-certificates ca-certificates 64 bits pacman -S mingw-w64-x86_64-ca-certificates ca-certificates share | improve this answer | follow | ...
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Cannot install packages using node package manager in Ubuntu

... TL;DR: sudo apt-get install nodejs-legacy First of all let me clarify the situation a bit. In summer 2012 Debian maintainers decided to rename Node.js executable to prevent some kind of namespace collision with another package. It was very hard ...
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How is “int* ptr = int()” value initialization not illegal?

...: In ubuntu 11.04 and our own linux flavor, libio.h contains: #if !defined(__cplusplus) \n #define NULL ((void*)0) \n #else \n #define NULL (0) the current version of gcc in ubuntu is 4.5, in our system is 4.0. – David Rodríguez - dribeas Nov 9 '11 at 17:33 ...
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How to install a gem or update RubyGems if it fails with a permissions error

I'm trying to install a gem using gem install mygem or update RubyGems using gem update --system , and it fails with this error: ...
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How to change Vagrant 'default' machine name?

... I found the multiple options confusing, so I decided to test all of them to see exactly what they do. I'm using VirtualBox 4.2.16-r86992 and Vagrant 1.3.3. I created a directory called nametest and ran vagrant init precise64 http://files.vagrantup.com/precise64.box to generate a...
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Encoding as Base64 in Java

... Base64.getEncoder().encodeToString(string.getBytes(StandardCharsets.UTF_8)) Here is a short, self-contained complete example: import java.nio.charset.StandardCharsets; import java.util.Base64; public class Temp { public static void main(String... args) throws Exception { final Str...
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Hidden features of Ruby

... From Ruby 1.9 Proc#=== is an alias to Proc#call, which means Proc objects can be used in case statements like so: def multiple_of(factor) Proc.new{|product| product.modulo(factor).zero?} end case number when multiple_of(3) puts "Multiple of 3" when multiple...
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How can one print a size_t variable portably using the printf family?

...on is to cast your variables to unsigned long long and use %llu to be maximally portable. – Adam Rosenfield Apr 13 '10 at 1:52  |  show 12 mor...