Apollo Tang ApolloTang

Node.js - npm Cheat Sheet

(Full description and list of commands at - https://npmjs.org/doc/index.html)

##List of less common (however useful) NPM commands

######Prepand ./bin to your $PATH Make sure to export your local $PATH and prepand relative ./node_modules/.bin/:

Sessions

New Session

tmux new [-s name] [cmd] (:new) - new session

Switch Session

tmux ls (:ls) - list sessions
tmux switch [-t name] (:switch) - switches to an existing session

learn blockchain concepts
learn ethereum
learn how to use metamask
learn how to use hardhat (https://hardhat.org/)
learn how to deploy and interact with a smart contract
learn common smart contract standards like ERC20 (token), ERC721 (nft), ERC1155 (opensea)
learn ipfs
learn how to read blockchain explorers like https://etherscan.io/
learn how to use web3 and etherjs
learn solidity

Pure ESM package

The package that linked you here is now pure ESM. It cannot be require()'d from CommonJS.

This means you have the following choices:

Use ESM yourself. (preferred)
Use import foo from 'foo' instead of const foo = require('foo') to import the package. You also need to put "type": "module" in your package.json and more. Follow the below guide.
If the package is used in an async context, you could use await import(…) from CommonJS instead of require(…).
Stay on the existing version of the package until you can move to ESM.

GROKKING NOTES

I liked the way Grokking the coding interview organized problems into learnable patterns. However, the course is expensive and the majority of the time the problems are copy-pasted from leetcode. As the explanations on leetcode are usually just as good, the course really boils down to being a glorified curated list of leetcode problems.

So below I made a list of leetcode problems that are as close to grokking problems as possible.

Pattern: Sliding Window

If you are on a Mac, substitute command for control. Don't type the + (it means press both keys at once).

Shortcuts when in either command mode (outside the cells) or edit mode (inside a cell):

Shift + Enter run selected cell or cells - if no cells below, insert a code cell below
Ctrl + B toggle hide/show left sidebar
Ctrl + S save and checkpoint
Ctrl + Shift + S save as

Bash string manipulation cheatsheet

Assignment
Assign `value` to `variable` if `variable` is not already set, `value` is returned. Combine with a `:` no-op to discard/ignore return `value`.	`${variable="value"}` `: ${variable="value"}`

People

`:bowtie:`	😄 `:smile:`	😆 `:laughing:`
😊 `:blush:`	😃 `:smiley:`	☺️ `:relaxed:`
😏 `:smirk:`	😍 `:heart_eyes:`	😘 `:kissing_heart:`
😚 `:kissing_closed_eyes:`	😳 `:flushed:`	😌 `:relieved:`
😆 `:satisfied:`	😁 `:grin:`	😉 `:wink:`
😜 `:stuck_out_tongue_winking_eye:`	😝 `:stuck_out_tongue_closed_eyes:`	😀 `:grinning:`
😗 `:kissing:`	😙 `:kissing_smiling_eyes:`	😛 `:stuck_out_tongue:`


	Unicode table - List of most common Unicode characters *
	* This summary list contains about 2000 characters for most common ocidental/latin languages and most printable symbols but not chinese, japanese, arab, archaic and some unprintable.
	Contains character codes in HEX (hexadecimal), decimal number, name/description and corresponding printable symbol.
	What is Unicode?

	Unicode is a standard created to define letters of all languages and characters such as punctuation and technical symbols. Today, UNICODE (UTF-8) is the most used character set encoding (used by almost 70% of websites, in 2013). The second most used character set is ISO-8859-1 (about 20% of websites), but this old encoding format is being replaced by Unicode.
	How to identify the Unicode number for a character?

	Type or paste a character:

	/**
	Here, the parser will add a semi colon after return causing the function to return nothing.
	**/
	function test(){
	var name = "Hello";
	return // it will add a ; here
	{
	name: name
	}
	}