RosettaCodeData/Task/Increment-a-numerical-string/Dyalect/increment-a-numerical-string.dyalect

var str = "42"
str = (parse(str) + 1).ToString()

//Another option:
str = (Integer(str) + 1).ToString()

//And another option using interpolation:
str = "\(parse(str) + 1)"

print(str) //Outputs 45