“piexifjs“ is a node.js npm library which can be used to read and write Exif data in image files.

From here and here.

The IK Analysis plugin integrates Lucene IK analyzer (http://code.google.com/p/ik-analyzer/) into elasticsearch, support customized dictionary.

This is a guide how to use ElasticSearch with Python and Jupyter.

To make the Jupyter works on my environment, I want to create a “miniconda” virtual environment, which caused error with “pyenv”. Here is the instructions how to make it work.

Today when I was claiming a dental expense, I was asked that whether the dental service is “basic” or “major”. I totally had no idea, so I googled it and get the following result from here.

On Mac I want to check the content of a RPM file, how to do it?

From here, here and here.

Alda is a music programming language for musicians.

From here.

A Merkle DAG is a Merkle directed acyclic graph. That is a data structure similar to a Merkle tree but not so strict: such DAG does not need to be balanced and its non-leaf nodes are allowed to contain data.

VirtualBox 6.0 was released on Dec 18th, 2018. This is a major version upgrade. The biggest improvement for me is the HiDPI support. It makes the Ubuntu VM in my MacBook host be able to leverage the high resolution display.