iandanforth

If you see this error when trying to import pandas under osx 10.14 Mojave

ModuleNotFoundError: No module named '_lzma'

You may be missing the xz libraries (https://tukaani.org/xz/)

This may be corrected by using homebrew to install it.

npearce

UPDATE (March 2020, thanks @ic): I don't know the exact AMI version but yum install docker now works on the latest Amazon Linux 2. The instructions below may still be relevant depending on the vintage AMI you are using.

Amazon changed the install in Linux 2. One no-longer using 'yum' See: https://aws.amazon.com/amazon-linux-2/release-notes/

Docker CE Install

sudo amazon-linux-extras install docker
sudo service docker start

anvk

--- PSQL queries which also duplicated from https://github.com/anvk/AwesomePSQLList/blob/master/README.md
--- some of them taken from https://www.slideshare.net/alexeylesovsky/deep-dive-into-postgresql-statistics-54594192

-- I'm not an expert in PSQL. Just a developer who is trying to accumulate useful stat queries which could potentially explain problems in your Postgres DB.

------------
-- Basics --
------------

-- Get indexes of tables

martinwicke

gandarez

class Tree
{
    public int x;
    public Tree l;
    public Tree r;
};

class Task3
{
    public int solution(Tree T)

GLMeece

Latency Comparison Numbers

Note: "Forked" from Latency Numbers Every Programmer Should Know

Event	Nanoseconds	Microseconds	Milliseconds	Comparison
L1 cache reference	0.5	-	-	-
Branch mispredict	5.0	-	-	-
L2 cache reference	7.0	-	-	14x L1 cache
Mutex lock/unlock	25.0	-	-	-

Shellbye

sudo wget http://d3kbcqa49mib13.cloudfront.net/spark-2.1.0-bin-hadoop2.7.tgz

sudo tar -zxvf spark-2.1.0-bin-hadoop2.7.tgz
cd spark-2.1.0-bin-hadoop2.7

sudo cp conf/log4j.properties.template conf/log4j.properties
sudo sed -i -e 's/INFO/WARN/g' conf/log4j.properties
sudo cp conf/spark-env.sh.template conf/spark-env.sh

sudo cp conf/slaves.template conf/slaves

iRbouh

<?php
namespace App\Traits;


trait UseAutoIncrementID {

    /**
     * Increment the counter and get the next sequence
     * 
     * @param $collection

application2000

These commands are based on a askubuntu answer http://askubuntu.com/a/581497
To install gcc-6 (gcc-6.1.1), I had to do more stuff as shown below.
USE THOSE COMMANDS AT YOUR OWN RISK. I SHALL NOT BE RESPONSIBLE FOR ANYTHING.
ABSOLUTELY NO WARRANTY.

If you are still reading let's carry on with the code.

sudo apt-get update && \
sudo apt-get install build-essential software-properties-common -y && \
sudo add-apt-repository ppa:ubuntu-toolchain-r/test -y && \

benlinton

Multiple MySQL Versions for Development

Options included below:

• Using Docker docker-compose
• Using Homebrew brew

Using Docker (recommended)

This gist was originally created for Homebrew before the rise of Docker, yet it may be best to avoid installing mysql via brew any longer. Instead consider adding a barebones docker-compose.yml for each project and run docker-compose up to start each project's mysql service.