aleksandar-b’s gists

aleksandar-b / electronics.sql

Created May 8, 2023 16:43

SQL Query: Electronics

	SELECT
	u.name AS user_name,
	u.email AS user_email,
	SUM(o.quantity * p.price) AS total_spent
	FROM
	users u
	JOIN
	orders o ON u.id = o.user_id
	JOIN
	products p ON o.product_id = p.id

aleksandar-b / proposal-value-objects.js

Last active April 28, 2022 09:45

	//Value objects

	//Motivation

	//Use cases

	//Proposed syntax

	value Money {
	constructor(amount, currency) {

aleksandar-b / events_pattern_matching.js

Last active April 1, 2022 11:58

	// cause => effect
	user()
	.correlationId('userId')
	.stateOfAffairs(UserHasRegistered).causes(KycVerified)
	.stateOfAffairs(UserHasRegistered,KycVerified).causes(AccountCreated)
	.stateOfAffairs(UserHasRegistered,KycVerified,AccountCreated).causes(UserHasTopUp)
	.stateOfAffairs(UserHasRegistered,KycVerified,AccountCreated,UserHasTopUp).causes(CreditCardCreated)
	.stateOfAffairs(UserHasRegistered,KycVerified,AccountCreated,UserHasTopUp,CreditCardCreated).causes(OnboardFinished)

aleksandar-b / NestInterceptor.ts

Last active March 24, 2022 06:13

Interceptor wrapper for NestJs

	import {
	CallHandler,
	ExecutionContext,
	Injectable,
	Logger,
	NestInterceptor,
	} from "@nestjs/common";
	import { Observable } from "rxjs";
	import { catchError, tap } from "rxjs/operators";
	import { isFunction } from "../utils";

aleksandar-b / Filter with recursion.js

Last active January 18, 2020 10:43

	const filter = ([head, ...rest] = [], callback) => {
	if(!head) return [];

	return [

	...callback(head) ? [head] : [],

	...filter(rest, callback)

	];

aleksandar-b / past-tense.js

Created August 19, 2019 08:29 — forked from letsgetrandy/past-tense.js

	// language exceptions
	var exceptions = {
	"are": "were",
	"eat": "ate",
	"go": "went",
	"have": "had",
	"inherit": "inherited",
	"is": "was",
	"run": "ran",
	"sit": "sat",

aleksandar-b / composingPromisesErlangStyle.js

Last active June 29, 2019 13:22

	import { should, each, iff, prop, props } from 'rvl-pipe'
	import { createUser, createAuthToken, authTokenValidator, requestValidator } from '../account'
	import ctx from './dummyContext'

	const registerUser = each(
	validateRequest(requestValidator),
	generatePasswordHash(prop('body.password'), 'passwordHash'),
	createDocument('users', createUser, "userAccount"),
	should(prop('userAccount'), 'invalidUser'),
	createJsonWebToken(createAuthToken),

aleksandar-b / undraw.json

Created November 24, 2018 17:26

["https://42f2671d685f51e10fc6-b9fcecea3e50b3b59bdc28dead054ebc.ssl.cf5.rackcdn.com/illustrations/recording_lywr.svg","https://42f2671d685f51e10fc6-b9fcecea3e50b3b59bdc28dead054ebc.ssl.cf5.rackcdn.com/illustrations/gifts_btw0.svg","https://42f2671d685f51e10fc6-b9fcecea3e50b3b59bdc28dead054ebc.ssl.cf5.rackcdn.com/illustrations/booking_33fn.svg","https://42f2671d685f51e10fc6-b9fcecea3e50b3b59bdc28dead054ebc.ssl.cf5.rackcdn.com/illustrations/youtube_tutorial_2gn3.svg","https://42f2671d685f51e10fc6-b9fcecea3e50b3b59bdc28dead054ebc.ssl.cf5.rackcdn.com/illustrations/logistics_x4dc.svg","https://42f2671d685f51e10fc6-b9fcecea3e50b3b59bdc28dead054ebc.ssl.cf5.rackcdn.com/illustrations/teddy_bear_hns1.svg","https://42f2671d685f51e10fc6-b9fcecea3e50b3b59bdc28dead054ebc.ssl.cf5.rackcdn.com/illustrations/email_campaign_qa8y.svg","https://42f2671d685f51e10fc6-b9fcecea3e50b3b59bdc28dead054ebc.ssl.cf5.rackcdn.com/illustrations/vehicle_sale_v7fm.svg","https://42f2671d685f51e10fc6-b9fcecea3e50b3b59bdc28dead054ebc.ssl.cf5.rackcd

aleksandar-b / .block

Created March 15, 2018 17:55

Animated Donut Chart with Percentage

license: gpl-3.0

aleksandar-b / .block

Created February 6, 2018 14:37 — forked from akbstone/.block

Closest Point on Path

license: gpl-3.0

Aleksandar.B aleksandar-b