Discover gists

⚠️ This discussion applies to version 1.13 (released 2019) of the Go language.

Why are Go's identical errors not equal?

Or, more precisely, why are two separate but otherwise seemingly identical errors created by Go's errors.New function not equal according to the == operator?

Consider the output of the following small program (Go Playground link) which compares Go's error values for equality:

package main

Delete discord user message history

This script allow for user specific message deletion from an entire server or a single channel using the browser console. This script uses discord search API and it will only delete messages of a chosen user.

How to use

1. Enable developer mode in discord

Go to user settings > appearance in discord and enable Developer mode.

2. Copy and paste the script to a file so you can change the server and author ids.

3. Replace the server and author ids with your own.

Real-time PHP-FPM Status

This gist will explain you how to enable an undocumented feature of PHP-FPM which will give a real-time performance stats.

Everybody knows the famous phpinfo() and the page it generates, right? Then the real-time PHP-FPM status page design is very similar.

Some informations from the top are not displayed to avoid security issues.

	// produce: accepts a cb which is called with an array of items
	// initial: initial array of results to return
	// returns a function which accepts a cb which is called with one item
	// each time it is called
	function generator(produce, initial) {
	var items;
	var waiting = [];

	var next = function (cb) {
	if (items && items.length) {

	#!/usr/bin/perl

	use strict;
	use List::Util 'max';

	my ($from, $to) = @ARGV
	or die "usage: $0 OLD-URL[\@OLDREV] NEW-URL[\@NEWREV]\n";

	my @diff = `svn diff $from $to` or die;
	my @blame = map {/^\s*(\d+)/} `svn blame $to` or die;

	{
	"Version": "2008-10-17",
	"Id": "b2cc31d0-cc91-4285-a658-473099d2c867",
	"Statement": [
	{
	"Sid": "AllowPublicRead",
	"Effect": "Allow",
	"Principal": {
	"AWS": "*"
	},

	function makeURL(firstname,lastname) {
	var name = "firstname + lastname";
	if (name = null) {
	return null
	};
	else return name;
	}

	function makeURL(firstname,lastname) {
	var name = firstname + lastname;
	if (!name) {
	return null;
	} else {
	return name;
	}
	}

	#!/usr/bin/perl

	my $url = "https://news.ycombinator.com/newcomments";

	sub html {
	`curl get $url 2>/dev/null`;
	}

	printf "# %s", `date`;