- proc parseSeconds(s: string): Expr {...}{.raises: [ValueError], tags: [].}
- 
- proc parseMinutes(s: string): Expr {...}{.raises: [ValueError], tags: [].}
- 
- proc parseHours(s: string): Expr {...}{.raises: [ValueError], tags: [].}
- 
- proc parseDayOfMonths(s: string): Expr {...}{.raises: [ValueError], tags: [].}
- 
- proc parseMonths(s: string): Expr {...}{.raises: [ValueError], tags: [].}
- 
- proc parseDayOfWeeks(s: string): Expr {...}{.raises: [ValueError], tags: [].}
- 
- proc parseYears(s: string): Expr {...}{.raises: [ValueError], tags: [].}
-