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8644 :: strformat with user-defined width?

• oyster (orginal) [2021-11-21T07:40:00+01:00] view original

  it is easy to output 9 which is aligned by the right with a space of 2 characters

  import strformat
  echo fmt"{9:>2d}"
  Run

  but what if the width is a var, how can we do the string format? What I mean

  
  var width = 2
  echo fmt"{9:>{width}d}"
  Run

  Thanks

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• ElegantBeef (orginal) [2021-11-21T07:44:26+01:00] view original

  fmt works using compile time logic, so the way to do it would be to use strutils.align as such

  import std/strutils
  var width = 2
  assert align($9, width) = " 9"
  Run

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