Example: ``` julia> parse(Int64, " 5 ") 5 julia> parse(FixedDecimal{Int64,2}, " 5.0 ") ERROR: ArgumentError: invalid digit: ' ' julia> parse(FixedDecimal{Int64,2}, "5.0") FixedDecimal{Int64,2}(5.00) julia> parse(Float64, " 3.14 ") 3.14 julia> parse(Float64, " 3 . 14 ") ERROR: ArgumentError: cannot parse " 3 . 14 " as Float64 ```