Mirror of forum.nim-lang.org

6078 :: strformat, use a variant as format specifier?

• oyster (orginal) [2020-03-17T09:09:27+01:00] view original

  as we all know, both of

  import strformat
  
  var
    i = 16
  
  echo fmt"{16:x}"
  echo fmt"{i:x}"
  Run

  print 10

  now, is it possible to use the format specifier in variant f? None of the following is corrected

  
  import strformat
  
  var
    i = 16
    f = 'x'
  Run

  then

  
  echo fmt"{i:f}"
  Run

  or

  
  echo fmt"{i:{f}}"
  Run

  or

  
  echo fmt"\{i:{f}\}".fmt
  Run

---

• pietroppeter (orginal) [2020-03-17T11:52:41+01:00] view original

  You can use formatValue from strformat module: https://play.nim-lang.org/#ix=2etN

  (see https://nim-lang.org/docs/strformat.html#implementation-details)

---