Danny Lagrouw dannylagrouw

ANSI Escape Sequences

Standard escape codes are prefixed with Escape:

Enable #enable-devtools-experiments flag in chrome://flags section.
Open Chorme Devtools and check Settings > Experiments > Allow extensions to load custom stylesheets.

Create the following four files in a dedicated folder.

3.1. devtools.html

<html>
<head></head>
<body><script src="devtools.js"></script></body>

	/*
	* Available context bindings:
	* COLUMNS List<DataColumn>
	* ROWS Iterable<DataRow>
	* OUT { append() }
	* FORMATTER { format(row, col); formatValue(Object, col) }
	* TRANSPOSED Boolean
	* plus ALL_COLUMNS, TABLE, DIALECT
	*
	* where:

	// BEFORE YOU start
	// npm init -y
	// npm install --save node-fetch
	const fetch = require('node-fetch');

	// INTRO
	// Javascript is single threaded, meaning that two bits of script cannot run at the same time.
	// Doing something which takes some time (a costly algorithm, a back-end call) causes everything else to halt
	// until it completes. In browsers, this often means the UI becomes non-responsive,
	// because the rendering of the screen is blocked.

	/////////
	// LESSION MATERIAL FOR .map, .filter, .reduce, function composition and currying
	/////////

	const list = [1, 2, 3, 4, 5];
	const anotherList = ['h', 'e', 'l', 'l', 'o'];

	let result;

	// map is used to transform each element in the array

	Latency Comparison Numbers (~2012)
	----------------------------------
	L1 cache reference 0.5 ns
	Branch mispredict 5 ns
	L2 cache reference 7 ns 14x L1 cache
	Mutex lock/unlock 25 ns
	Main memory reference 100 ns 20x L2 cache, 200x L1 cache
	Compress 1K bytes with Zippy 3,000 ns 3 us
	Send 1K bytes over 1 Gbps network 10,000 ns 10 us
	Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD

	/*
	* System Versioning Preprocessor Macros
	*/

	#define SYSTEM_VERSION_EQUAL_TO(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedSame)
	#define SYSTEM_VERSION_GREATER_THAN(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedDescending)
	#define SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedAscending)
	#define SYSTEM_VERSION_LESS_THAN(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedAscending)
	#define SYSTEM_VERSION_LESS_THAN_OR_EQUAL_TO(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedDescending)