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Custom react hooks using useEffect

Hooks can be used to easily abstract functionality and provide great behavior using just functional components.

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How to generate ssh key using putty-tools

install putty tools: sudo apt-get install putty-tools generate key : puttygen -t rsa -b 2048 -C "user@host" -o keyfile.ppk generate pem from key puttygen keyfile.ppk -O private-openssh -o keyfile.pem the the pub from key: puttygen -L keyfile.ppk > keyfile.pub

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Using Set in JavaScript

Set lets you store unique object references or primitive values. Let's start with an example const numbers = new Set([1,2,3,3]);

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Pure functions

You can say about a function that is pure when for the same arguments it returns the same result every time.

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