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8346 :: Read command-line arguments

• Doctor (orginal) [2021-08-20T16:19:24+02:00] view original

  How do I read command-line arguments in Nim? More specifically how I'd do this in nim:

  e.g In rust I'd something like this:

  
      let args: Vec<String> = env::args().collect();
      let num1 = &args[1];
      let operator = &args[2];
      let num2 = &args[3];
  Run

  e.g practical: <something.rs> 12 + 34

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• Araq (orginal) [2021-08-20T16:30:11+02:00] view original

  Via https://nim-lang.org/docs/os.html#paramStr%2Cint or https://nim-lang.org/docs/parseopt.html#parsing

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• enthus1ast (orginal) [2021-08-20T16:48:44+02:00] view original

  Or https://github.com/c-blake/cligen

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• ynfle (orginal) [2021-08-20T17:04:10+02:00] view original

  https://github.com/docopt/docopt.nim

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• PMunch (orginal) [2021-08-23T08:42:14+02:00] view original

  I mean his specific usage can be done with commandLineParams:

  import os
  
  let
    args = commandLineParams()
    num1 = args[0]
    operator = args[1]
    num2 = args[2]
  Run

  Or by using paramStr directly:

  import os
  
  let
    num1 = paramStr(1)
    operator = paramStr(2)
    num2 = paramStr(3)
  Run

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