note_go.md

GO

4.3

• defer
  • The deferred call's arguemts are evaluated immediately, but the function call is not executed until the surrounding function returns.
  • Deferred funtion called are pushed onto a stack. When a function returns, its deferred calls are executed in last-in-first-out order.
• dynamically-size array - slice
  • A slice does not store any data, it just describes a section of an underlying array.
• nil is the zero value for pointers, interfaces, maps, slices, channels and function types, representing an uninitialized value.

4.4

• GO does not have classes. However, we can define methods on types.
  • methods with pointer or value receivers take either a value or a pointer as the receiver when they are called.
  • using pointer receiver is recommended.
• goroutines, channels, mutex
  • ?????