Slawa Pidgorny spidgorny

Configure Git to use a proxy

In Brief

You may need to configure a proxy server if you're having trouble cloning or fetching from a remote repository or getting an error like unable to access '...' Couldn't resolve host '...'.

Consider something like:

Code snippets to accompany How-To: Tail Apache logs to Ubuntu Notifications on http://insidethe.agency/

Original Article: http://insidethe.agency/blog/how-to-tail-apache-logs-to-ubuntu-notifications

#dart:convert example

How to pretty-print JSON using Dart.

How to display JSON in an easy-to-read (for human readers) format.

Main library: dart:convert
Main element: JsonEncoder.withIndent
Gist: https://gist.github.com/kasperpeulen/d61029fc0bc6cd104602

	function mySlowFunction(baseNumber) {
	console.time('mySlowFunction');
	let result = 0;
	for (var i = Math.pow(baseNumber, 7); i >= 0; i--) {
	result += Math.atan(i) * Math.tan(i);
	};
	console.timeEnd('mySlowFunction');
	}

	mySlowFunction(8); // higher number => more iterations => slower

	<html>
	<!--
	- GIF is too slow
	- flipping colours in JS is easy
	- Using backgroundImage is flickery
	- With preload: fixed!
	-->
	<head>
	<style>
	body {

	// Run this in the F12 javascript console in chrome
	// if a redirect happens, the page will pause
	// this helps because chrome's network tab's
	// "preserve log" seems to technically preserve the log
	// but you can't actually LOOK at it...
	// also the "replay xhr" feature does not work after reload
	// even if you "preserve log".

	window.addEventListener("beforeunload", function() { debugger; }, false)

	var traverse = function(o, fn) {
	for (var i in o) {
	fn.apply(this,[i,o[i]]);
	if (o[i] !== null && typeof(o[i])=="object") {
	traverse(o[i], fn);
	}
	}
	}

	// usage

	# If you are using the MySQL 5.6 version of mysqldump on an older MySQL database, you might get the error message.

	mysqldump: Couldn't execute 'SELECT @@GTID_MODE': Unknown system variable 'GTID_MODE' (1193)

	# This error is in part due to the introduction of Global Transaction Identifiers (GTIDs) in MySQL 5.6. GTIDs make it simple to # track and compare replication across a master-slave topology.

	# mysqldump tries to query this system variable, which doesn’t exist in earlier versions, and then fails. The solution is to add # –set-gtid-purged=OFF in the mysqldump command. It should look something like


	mysqldump -h dbHost -u dbuser dbName --set-gtid-purged=OFF

	# Assuming an Ubuntu Docker image
	$ docker run -it <image> /bin/bash