00:00 - что будем делать 00:31 - зачем преобразовывать объект в примитив 01:46 - правила преобразования 02:36 - хинт string 03:00 - хинт number 03:22 - хинт default 04:11 - логика преобразования в JavaScript 06:19 - преобразование через Symbol.toPrimitive 12:04 - преобразование через методы toString / valueOf 15:38 - универсальное преобразование 16:42 - что надо запомнить 17:41 - итоги
00:00 - что будем делать 00:31 - зачем преобразовывать объект в примитив 01:46 - правила преобразования 02:36 - хинт string 03:00 - хинт number 03:22 - хинт default 04:11 - логика преобразования в JavaScript 06:19 - преобразование через Symbol.toPrimitive 12:04 - преобразование через методы toString / valueOf 15:38 - универсальное преобразование 16:42 - что надо запомнить 17:41 - итоги
Telegram is riding high, adding tens of million of users this year. Now the bill is coming due.Telegram is one of the few significant social-media challengers to Facebook Inc., FB -1.90% on a trajectory toward one billion users active each month by the end of 2022, up from roughly 550 million today.
How Does Bitcoin Work?
Bitcoin is built on a distributed digital record called a blockchain. As the name implies, blockchain is a linked body of data, made up of units called blocks that contain information about each and every transaction, including date and time, total value, buyer and seller, and a unique identifying code for each exchange. Entries are strung together in chronological order, creating a digital chain of blocks. “Once a block is added to the blockchain, it becomes accessible to anyone who wishes to view it, acting as a public ledger of cryptocurrency transactions,” says Stacey Harris, consultant for Pelicoin, a network of cryptocurrency ATMs. Blockchain is decentralized, which means it’s not controlled by any one organization. “It’s like a Google Doc that anyone can work on,” says Buchi Okoro, CEO and co-founder of African cryptocurrency exchange Quidax. “Nobody owns it, but anyone who has a link can contribute to it. And as different people update it, your copy also gets updated.”
