Mirror of forum.nim-lang.org

7726 :: Create a data structure of strings mapped to arrays of strings

• bolino (orginal) [2021-03-31T14:29:53+02:00] view original

  I'm very newbie to Python, and I'm trying to create a data structure equivalent to this in Python or in JSON:

  {

  "male": ["男性", "homme"], "female": ["女性", "femme"], "unisex": ["ユニセックス", "unisexe"]

  }

  It needs to be able to be easily parsed afterwards. I couldn't figure out how to map strings to arrays in a Nim table.

  Any advice?

---

• Yardanico (orginal) [2021-03-31T15:25:41+02:00] view original

  You can do it like that:

  import std/tables
  
  var mapping = {
    "male": @["男性", "homme"],
    "female": @["女性", "femme"],
    "unisex": @["ユニセックス", "unisexe"]
  }.toTable()
  
  echo mapping["male"]
  Run

  Or, if you want to fill it manually:

  import std/tables
  
  # Mapping from a single string to multiple
  # strings
  var mapping: Table[string, seq[string]]
  mapping["male"] = @["男性", "homme"]
  mapping["female"] = @["女性", "femme"]
  
  echo mapping["male"]
  Run

  This assumes that values in the table can be of different length, if you want them to all be the same, then use array[2, string] instead of seq[string]

---

• bolino (orginal) [2021-03-31T16:29:37+02:00] view original

  Thanks! Works like a charm!

---

• Yardanico (orginal) [2021-03-31T16:33:09+02:00] view original

  No, you can use arrays as well, maybe you didn't specify their length? In Nim arrays have static length (known at compile time, can't be changed at runtime)

---