How to declare constant map in Go?

Question

I am trying to declare to constant in Go, but it is throwing an error. Could anyone please help me with the syntax of declaring a constant in Go?

This is my code:
const romanNumeralDict map[int]string = {
  1000: "M",
  900 : "CM",
  500 : "D",
  400 : "CD",
  100 : "C",
  90  : "XC",
  50  : "L",
  40  : "XL",
  10  : "X",
  9   : "IX",
  5   : "V",
  4   : "IV",
  1   : "I",
}

This is the error
# command-line-arguments
./Roman_Numerals.go:9: syntax error: unexpected {

Chris Gregori · Accepted Answer

Your syntax is incorrect. To make a literal map (as a pseudo-constant), you can do: var romanNumeralDict = map[int]string{ 1000: "M", 900 : "CM", 500 : "D", 400 : "CD", 100 : "C", 90 : "XC", 50 : "L", 40 : "XL", 10 : "X", 9 : "IX", 5 : "V", 4 : "IV", 1 : "I", } You may emulate a map with a closure:

Go Language

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