> Note that parsing files was discussed in the Manning book, and I recently > added a section to my book too[...]
what about using streams and an iterator?
import streams
proc pgmRead(strm: FileStream, filePos: int=0): auto=
var data: char
strm.setPosition(filePos)
return iterator: (int, char)=
while not strm.atEnd:
let idx = getPosition(strm)
read(strm, data)
yield (idx, data)
strm.close()
Run
full code for parsing pgm
<https://gist.github.com/ingoogni/b422eaa251e9c9192071be94d8269de9>
