types

Node.js

  1. // primitives
  2. const myBool = true
  3. const myNumber = 10
  4. const myString = 'foo'
  5. const mySymbol = Symbol('bar')
  6. const myNull = null
  7. const myUndefined = undefined
  9. // object types
  10. const myObject = {}
  11. const myArray = []
  12. const myFunction = function() {}
  13. const myError = new Error('error')
  14. const myDate = new Date()
  15. const myRegex = /a/
  16. const myMap = new Map()
  17. const mySet = new Set()
  18. const myPromise = Promise.resolve()
  19. const myGenerator = function *() {}
  20. const myClass = class {}

Go

  1. package main
  3. func main() {
  4.     // primitives
  5.     var myBool bool = true
  6.     var myInt int = 10
  7.     var myInt8 int8 = 10
  8.     var myInt16 int16 = 10
  9.     var myInt32 int32 = 10
  10.     var myInt64 int64 = 10
  11.     var myUint uint = 10
  12.     var myUint8 uint8 = 10
  13.     var myUint16 uint16 = 10
  14.     var myUint32 uint32 = 10
  15.     var myUint64 uint64 = 10
  16.     var myUintptr uintptr = 10
  17.     var myFloat32 float32 = 10.5
  18.     var myFloat64 float64 = 10.5
  19.     var myComplex64 complex64 = -1 + 10i
  20.     var myComplex128 complex128 = -1 + 10i
  21.     var myString string = "foo"
  22.     var myByte byte = 10  // alias to uint8
  23.     var myRune rune = 'a' // alias to int32
  25.     // composite types
  26.     var myStruct struct{} = struct{}{}
  27.     var myArray []string = []string{}
  28.     var myMap map[string]int = map[string]int{}
  29.     var myFunction func() = func() {}
  30.     var myChannel chan bool = make(chan bool)
  31.     var myInterface interface{} = nil
  32.     var myPointer *int = new(int)
  33. }