Overview

Go is a statically typed, type inferred language!

i.e.) You don't have to write a type of a variable explicitly, the compile will infer it. But all types must be known/inferred at compile time.

Variables

• var keyword

Declaration & Initialization

• var <name> <type>
• var <name> = <val>
• <name> := <val>

Default values & types

• zero values
• Basic types
  • defined in the builtin package
• multiple assignment
  • var i, j = "Hello", 42

bool

string

int  int8  int16  int32  int64
uint uint8 uint16 uint32 uint64 uintptr

byte // alias for uint8

rune // alias for int32
     // represents a Unicode code point

float32 float64

complex64 complex128

• Know type information using %T formatter
• Type aliases using type keyword

Type conversion

• <type>(<val-of-other-type>)
  • Eg: val := int(42.00)
• Specialized type conversion strconv