Custom type based on int (works because of ~int)

============================================ REAL-WORLD EXAMPLE: Bank Account ============================================

Container is a GENERIC STRUCT [T any] means the struct can hold any type Real-world example: Like a box that can hold toys, books, or clothes

============================================ CHANNELS: Communication between goroutines ============================================ Channels are like

nested structs

Struct embedding and methods

sumNumbers uses CONSTRAINT INTERFACE with ~ ~int means "any type whose underlying type is int" This includes: int, type MyInt int, type Age int, etc.

OrderStatus is a custom type based on string This creates a "type-safe enum" pattern in Go Type-safe means you can't accidentally use a random string

Structs -> custom data types defining a struct

payment struct holds a payment gateway The 'gateway' field can be ANY type that implements the paymenter interface This is the power of interfaces - y

paymenter is an interface that defines a contract Any type that wants to be a "paymenter" MUST implement the pay() method This is like a rule book - "

============================================ RWMUTEX: Read-Write Mutex 📖✍️ ============================================ Problem with regular Mutex: Re

============================================ SOLUTION: Using Mutex ============================================

============================================ MUTEX: Mutual Exclusion Lock 🔒 ============================================ MUTEX stands for "MUTual EXcl

razorpay is an empty struct representing the Razorpay payment gateway

stripe is another payment gateway