kanrong

kanrong / Promise.filter.js

Created September 4, 2024 06:28 — forked from yongjun21/Promise.filter.js

Complete implementation of Promise.filter

	Promise.filter = function (iterable, filterer, options = {}) {
	let concurrency = options.concurrency \|\| Infinity

	let index = 0
	const results = []
	const predicates = []
	const pending = []
	const iterator = iterable[Symbol.iterator]()

	while (concurrency-- > 0) {

kanrong / Promise.map.js

Created September 4, 2024 06:28 — forked from yongjun21/Promise.map.js

Complete implementation of Promise.map

	Promise.map = function (iterable, mapper, options = {}) {
	let concurrency = options.concurrency \|\| Infinity

	let index = 0
	const results = []
	const pending = []
	const iterator = iterable[Symbol.iterator]()

	while (concurrency-- > 0) {
	const thread = wrappedMapper()

kanrong / read-access.sql

Created August 28, 2024 03:34 — forked from oinopion/read-access.sql

How to create read only user in PostgreSQL

	-- Create a group
	CREATE ROLE readaccess;

	-- Grant access to existing tables
	GRANT USAGE ON SCHEMA public TO readaccess;
	GRANT SELECT ON ALL TABLES IN SCHEMA public TO readaccess;

	-- Grant access to future tables
	ALTER DEFAULT PRIVILEGES IN SCHEMA public GRANT SELECT ON TABLES TO readaccess;