Some legacy codes are not compatible with latest nodejs. nvm helps with this situation to provide older stable version.

Uninstall system-wide nodejs and install nvm via package management.

Config fish-shell:

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function nvm
   bass source (brew --prefix nvm)/nvm.sh --no-use ';' nvm $argv
end

set -x NVM_DIR ~/.nvm
nvm use default --silent

Take effect immediately:

source ~/.config/fish/config.fish

An extension to fish-shell is bass.

Bass makes it easy to use utilities written for Bash in fish shell.

An extension to homebrew is cask.

https://databricks.com/blog/2015/06/22/understanding-your-spark-application-through-visualization.html

https://spark.apache.org/docs/latest/cluster-overview.html

https://mapr.com/blog/getting-started-spark-web-ui/

https://michalsenkyr.github.io/2018/01/spark-performance

https://dzone.com/articles/my-tryst-with-elasticsearch

https://juejin.im/entry/5893e8f2128fe10065477d08

https://www.cnblogs.com/wenbochang/p/8808072.html

https://blog.csdn.net/mxsgoden/article/details/8821936

https://www.nowcoder.com/discuss/77835?type=2&order=1&pos=913&page=1

https://blog.csdn.net/weixin_33759269/article/details/93054344

https://blog.csdn.net/qq_35264464/article/details/80050005

https://www.nowcoder.com/discuss/169881

http://blog.sina.com.cn/s/blog_6d932f2a0101jjkl.html

https://www.nowcoder.com/discuss/273271

https://www.nowcoder.com/discuss/161537

https://www.nowcoder.com/discuss/172152?type=0&order=0&pos=5&page=4

• Why IA Matters for UX — A Brief History of Information Architecture

  Information architecture (IA) is essentially a mental wayfinding system.

• Kernel state and user state

• Memory management and address conversion

  

• Thread-pool

  Concurrency

• ACID

  (Atomicity, Consistency, Isolation, Durability) is a set of properties of database transactions

A list of frequently asked Java questions

• Overriding vs overloading

  Overriding happens at subclass while overloading happens in the same class. Also, overriding is a runtime activity while overloading is resolved at compile time.

• Difference between Hashtable and Hashmap, ArrayList and Vector

  Synchronized or not.

• Thread-safe and synchronization

• Skymind.ai

• Keras

• blueberrymusic

• Deep Learning, Vol. 1: From Basics to Practice

• Withdraw a course if workload is too heavy.

• Auditory sense stimulates comprehension when learning for first time. Multimedia records and replays are required.

• Paper-based books and notes may fit for efficient reviewing. Notes on screens are not yet quite suitable for looking over. Textbooks appear to be loquacious at first glance, but include meaningful extensions.

You need the following to distinguish between built-in and user installed versions of JDK.

/usr/libexec/java_home -verbose

• Stateless components - purely functional

  No need to implement constructor then.