offset broken?

[Bob Sneidar]

Yes and I said as much in a prior post. Calling a handler a “script” is a bad habit some of us have fallen into, but the human brain is wonderfully adept at hearing what people mean, and not necessarily what people say, which by the way is what makes for all the miscommunication between computers and men. Computers only do what we say. Humans are always trying to interpret why computers mean. 

Bob


On Feb 22, 2014, at 10:32 , prothero at earthednet.org wrote:

> Folks:
> I get it. It seems an odd way to implement it, though. Anyway, a clarification in the docs would help the confusion, and the use of the word "items" in the docs is definitely confusing.
> 
> Another thing that confuses me, as a newbie, is the free interchangeable use of "handler" and "script". In my understanding, a "script" is the entire collection of handlers within an object. A handler is what comes between the "on someName" and the "end someName" or the "function someName" and the "end someName". I am still not clear on the limits of how many "scripts" in the front scripts and whether the limit applies to "scripts" or "handlers".
> 
> Minor frustrations all, because i do like livecode and have been feeling very productive using it.
> 
> Best,
> Bill
> William Prothero
> http://es.earthednet.org
> 
> 
> 
> On Feb 22, 2014, at 10:25 AM, Peter Haworth <pete at lcsql.com> wrote:
> 
>> Hi Bill,
>> If you specify a number of characters to skip, the offset that is returned
>> is relative to that number, not the start of the string.  So if you specify
>> 7 characters to skip and the character you are looking for is the 10th
>> character in the string, you will get (10-7) or 3 as the result.
>> 
>> Pete
>> lcSQL Software <http://www.lcsql.com>
>> Home of lcStackBrowser <http://www.lcsql.com/lcstackbrowser.html> and
>> SQLiteAdmin <http://www.lcsql.com/sqliteadmin.html>
>> 
>> 
>> On Sat, Feb 22, 2014 at 9:49 AM, prothero at earthednet.org <
>> prothero at earthednet.org> wrote:
>> 
>>> Folks:
>>> I think there is something weird about "offset". This occurred on version
>>> 6.5 and now on 6.6.
>>> 
>>> First off, the documents say:
>>> 
>>> "the charsToSkip is a non-negative integer. If you don't specify how many
>>> charsToSkip, the offset function does not skip any items and starts at the
>>> beginning of the stringToSearch."
>>> 
>>> Note the use of the word "items".  Skipping characters vs skipping "items"
>>> is a different matter. In the revdocs that are online, the definition of
>>> "characters" to skip is correct.
>>> 
>>> But, that's not the end of the story. Offset does not appear to be working
>>> correctly anyway.
>>> 
>>> If I run the script:
>>> 
>>>  put "abcdefgabcccablmnopoq" into theChars
>>>  put offset("c",theChars)
>>> 
>>> I get: 3, which is correct
>>> 
>>> If I do:
>>>  put "abcdefgabcccablmnopoq" into theChars
>>>  put offset("c",theChars,3)
>>> 
>>> I get 7.  ??? What the heck? It looks like it returns (the number of
>>> characters to the search char) - (# to skip).
>>> 
>>> But, if I do:
>>>  put "abcdefgabcccablmnopoq" into theChars
>>>  put offset("c",theChars,7)
>>> 
>>> I get: 3
>>> 
>>> So, something is very wrong with the offset command. I worked around this
>>> in a parsing script by always not skipping any characters, then after I
>>> found the first instance, deleting the characters I wanted to skip before
>>> the next offset invocation.
>>> 
>>> Seems like a bug to me. What do you think? Or is it only my system? Or is
>>> the use of the offset function some convoluted logic that's different from
>>> most other implementations of an offset function? What do I know? I'm new
>>> to Livecode.
>>> 
>>> Best,
>>> Bill
>>> 
>>> 
>>> William Prothero
>>> http://es.earthednet.org
>>> 
>>> 
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