Типы данных, оператор typeof, аннотации типов в typescript
В этом уроке мы познакомимся со всем основными типами данных в JS/TS, разберемся с тем, как пользоваться оператором typeof и разберем основные аннотации типов для структур данных, функций, интерфейсов и отдельных переменных
Общая часть: 00:00 - что будем делать 01:45 - основные типы данных 02:15 - тип данных number 03:49 - Infinity, -Infinity, NaN 07:47 - bigint 12:08 - string 14:35 - boolean 14:35 - null, undefined 19:12 - symbol 19:50 - object 23:32 - оператор typeof
Для опытных: 25:11 - array 27:30 - tuple 28:42 - enum 31:05 - any 32:23 - void 33:32 - never 34:34 - unknown 37:12 - literal types 38:24 - union types 39:24 - type aliases 40:31 - interfaces 42:50 - intersection types 45:05 - итоги
Типы данных, оператор typeof, аннотации типов в typescript
В этом уроке мы познакомимся со всем основными типами данных в JS/TS, разберемся с тем, как пользоваться оператором typeof и разберем основные аннотации типов для структур данных, функций, интерфейсов и отдельных переменных
Общая часть: 00:00 - что будем делать 01:45 - основные типы данных 02:15 - тип данных number 03:49 - Infinity, -Infinity, NaN 07:47 - bigint 12:08 - string 14:35 - boolean 14:35 - null, undefined 19:12 - symbol 19:50 - object 23:32 - оператор typeof
Для опытных: 25:11 - array 27:30 - tuple 28:42 - enum 31:05 - any 32:23 - void 33:32 - never 34:34 - unknown 37:12 - literal types 38:24 - union types 39:24 - type aliases 40:31 - interfaces 42:50 - intersection types 45:05 - итоги
Most people buy Bitcoin via exchanges, such as Coinbase. Exchanges allow you to buy, sell and hold cryptocurrency, and setting up an account is similar to opening a brokerage account—you’ll need to verify your identity and provide some kind of funding source, such as a bank account or debit card. Major exchanges include Coinbase, Kraken, and Gemini. You can also buy Bitcoin at a broker like Robinhood. Regardless of where you buy your Bitcoin, you’ll need a digital wallet in which to store it. This might be what’s called a hot wallet or a cold wallet. A hot wallet (also called an online wallet) is stored by an exchange or a provider in the cloud. Providers of online wallets include Exodus, Electrum and Mycelium. A cold wallet (or mobile wallet) is an offline device used to store Bitcoin and is not connected to the Internet. Some mobile wallet options include Trezor and Ledger.
Telegram Auto-Delete Messages in Any Chat
Some messages aren’t supposed to last forever. There are some Telegram groups and conversations where it’s best if messages are automatically deleted in a day or a week. Here’s how to auto-delete messages in any Telegram chat. You can enable the auto-delete feature on a per-chat basis. It works for both one-on-one conversations and group chats. Previously, you needed to use the Secret Chat feature to automatically delete messages after a set time. At the time of writing, you can choose to automatically delete messages after a day or a week. Telegram starts the timer once they are sent, not after they are read. This won’t affect the messages that were sent before enabling the feature.
