gistfile1.txt

## Imports
import marshal
import macros
 
 
## Types
type TLog* = ref object
  path: string
  file: TFile
 
 
## Procedures
proc openLog*(path: string, mode: TFileMode = fmReadWrite): TLog =
  new(result)
  discard result.file.open(path, mode)
 
 
proc closeLog*(log: TLog) =
  log.file.close()
  log.file = nil
 
 
proc writeLog*[T](log: TLog, value: T) = 
  log.file.writeln($$value)
 
 
proc readLog*[T](log: TLog): T =
  var line = log.file.readLine()
  result = to[T](line)
 
 
var log = openLog("log2.db")
log.writeLog("hello world")
 
log.file.setFilePos(0)
 
echo "reading from log (1)"
echo readLog[string](log)  #works
echo log.readLog[string]() #fails
 
echo "closing log"
log.closeLog()