Compare numeric strings with leading zeros

[Jerry Jensen]

What’s wrong with simply:

function stringsAreEqual p1, p2
   return (p1 & "z") = (p2 & "z")
end stringsAreEqual

As Terry Judd and Mark Wieder suggested yesterday?

.Jerry

> On Sep 3, 2015, at 8:56 PM, Thierry Douez <th.douez at gmail.com> wrote:
> 
> Hi,
> 
>> Ahhhhhhhhh,
> 
> Well, nothing very dangerous here :)
> 
>>>  if matchText( userTyping, myVeryStrongPassword) then ...
> 
> This was a direct answer to this thread:
> 
>         "compare numeric strings with leading zeros" !
> 
> 
>> I would caution against using matchText for this purpose,
>> because the second
>> parameter is treated by the function as a regular expression.
> 
> 
> Yes,
> myVeryStrongPassword is a regular expression in a pure litteral form.
> 
> 
>> 
>> For instance, matchText would return true if you were to reverse your
>> example values:
> 
> Yes, the order of the parameters have a meaning, but this is true
> for so much functions in LC. So, I don't get it :(
> 
> 
>> In addition,
>> since passwords are typically allowed to contain any character
> 
> Was not asked by the OP.
> 
> Ok then, so new  rules here:)
> 
>>   local userTyping = "5"
>>   local myVeryStrongPassword = "^5$"
> 
> If your password can contains any chars,
> Just tell it to matchText():
> 
>    my password can be any character and I don't want you to
>    interpret them in any ways!
> 
> For that,
> enclose your myVeryStrongPassword by "\Q" & "\E" and it
> will be interpreted as litteral characters.
> 
> 
>> Since Ralph is looking to use this for password validation,
>> I would throw in a case sensitivity check as well:
> 
> For this one, there is nothing special to do.
> If it will be case insensitive you could add a prefix to the regex: (?i)
> 
> so the final matchText() solution is:
> 
> put  "\Q^5$\E"  into  myVeryStrongPassword
> if matchText( userTyping,  myVeryStrongPassword ) then ...
> 
> 
> Ok, now I'm waiting for what I've missed...
> 
> Have all a nice day or night.
> 
> Thierry
> 
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