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Minour IP4 "isValid" or "construct fromString" issue #23

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@aosenkidu

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@aosenkidu

Strictly speaking, this one is still correct:
isValid { _address.count == 4 && _address.all {|n| n is Num && n >= 0 && n <= 255 }}

But the way how the array is filled assumes all parts of the string are in decimal format:

construct fromString(s) {
    _address = s.split(".").map { |n| Num.fromString(n) }
  }

However an IP address like this: 168.011.012.013 is not decimal. The 3 parts starting with a 0 are supposed to be interpreted as octal numbers.

So strictly speaking you construct a "valid IP address" but it is not the one, a proper IP stack would construct.

No worries: that usage is extremely rare ... and there are (plenty?) IP stacks that do it wrong, too :P

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