hello world! 42 100000000 abc a b c 123 123 -123 12345 12345 -12345 12345678 12345678 -12345678 123456789012 123456789012 -123456789012 +3.140000e+000 +3.140000e+000 (+5.000000e+000+1.234500e+000i) (0:nil) map[2] true false