Abenezer Belachew abenezerBelachew

Falsehoods programmers believe about time

This is a compiled list of falsehoods programmers tend to believe about working with time.

Don't re-invent a date time library yourself. If you think you understand everything about time, you're probably doing it wrong.

Falsehoods

There are always 24 hours in a day.
February is always 28 days long.
Any 24-hour period will always begin and end in the same day (or week, or month).

Go (Golang) Standard Library Interfaces (Selected)

This is not an exhaustive list of all interfaces in Go's standard library. I only list those I think are important. Interfaces defined in frequently used packages (like io, fmt) are included. Interfaces that have significant importance are also included.

All of the following information is based on go version go1.8.3 darwin/amd64.

security and hardening options for systemd service units

A common and reliable pattern in service unit files is thus:

NoNewPrivileges=yes
PrivateTmp=yes
PrivateDevices=yes
DevicePolicy=closed
ProtectSystem=strict

Repository Title Goes Here

INSERT GRAPHIC HERE (include hyperlink in image)

Subtitle or Short Description Goes Here

ideally one sentence >

	"use client";

	/* eslint-disable @next/next/no-img-element */
	import Link from "next/link";
	import { useState, useEffect } from 'react';
	import {
	AppBskyFeedDefs,
	AppBskyFeedPost,
	type AppBskyFeedGetPostThread,
	} from "@atproto/api";

	// 3D Dom viewer, copy-paste this into your console to visualise the DOM as a stack of solid blocks.
	// You can also minify and save it as a bookmarklet (https://www.freecodecamp.org/news/what-are-bookmarklets/)
	(() => {
	const SHOW_SIDES = false; // color sides of DOM nodes?
	const COLOR_SURFACE = true; // color tops of DOM nodes?
	const COLOR_RANDOM = false; // randomise color?
	const COLOR_HUE = 190; // hue in HSL (https://hslpicker.com)
	const MAX_ROTATION = 180; // set to 360 to rotate all the way round
	const THICKNESS = 20; // thickness of layers
	const DISTANCE = 10000; // ¯\\_(ツ)_/¯

	-- This function is designed to duplicate all live INSERTS/UPDATES/DELETES from one table (referred to as "source_table_name"
	-- to a second partitioned table (referred to as "destination_table_name"). The function should be set to trigger after insert/
	-- update/delete on the source table.

	-- This function is designed to be leveraged for partitioned table migration through this method:
	-- 1) Create an empty partitioned copy of the "source_table_name". Alter primary key as necessary, as partitioned Postgres
	-- tables do not support unique/primary keys not included in the partition key.
	-- 2) Create the following function, and attach it as a trigger to "source_table_name". At this point, incoming new DML is
	-- being copied successfully to the partitioned table, so only historical data will need to be backfilled.
	-- 3) Target rows in "source_table_name" with an updated_at value BEFORE the trigger was attached, and backfill them into

	# Recommended Celery Django settings for reliability:
	# (use `app.config_from_object('django.conf:settings', namespace='CELERY')`
	# in proj/celery.py module)

	from decouple import config # use python-decouple: https://github.com/HBNetwork/python-decouple

	# Prefer RabbitMQ over Redis for Broker,
	# mainly because RabbitMQ doesn't need visibility timeout. See:
	# https://blog.daftcode.pl/working-with-asynchronous-celery-tasks-lessons-learned-32bb7495586b
	# https://engineering.instawork.com/celery-eta-tasks-demystified-424b836e4e94

	import functools

	from django.conf import settings
	from django.db import transaction, utils


	def durable(func):
	"""
	Decorator to ensure that a function is not being called within an atomic block.

	package main

	import (
	"encoding/json"
	"net/http"
	)

	func main() {}

	func healthcheckHandlerEncoder(w http.ResponseWriter, r *http.Request) {