From: Robert Klemme <shortcutter@...>
Date: 2010-02-20T06:15:06+09:00
Subject: Re: strings combine

On 19.02.2010 21:24, Justin Collins wrote:
> Raul Jara wrote:
>> Roger Pack wrote:
>>
>>>> I think you misunderstand what I was saying.  I was not asking what the
>>>> differences between the parser and the runtime are.  I was asking for a
>>>> rationale.  If Matz believed that strings, when placed together without
>>>> any punctuation between them should be concatenated, why didn't he make
>>>> it standard operating behavior?  I can't imagine it would have been so
>>>> difficult for when the parser sees two variables in a row to treat it as
>>>> equivalent to a concatenation call on the first variable with the second
>>>> variable as an argument.  If Matz didn't think that two strings should
>>>> be concatenated, why program that behavior into the parser?
>>>>
>>> Yeah it ends up being pretty hard to generate a parser that will do
>>> both.
>>> -rp
>>>
>>
>> I'm not sure why, though.  The parser is able to turn
>>
>> x + y
>>
>> into
>>
>> x.+(y)
>>
>>
>> What would be so hard about having the parser turn:
>>
>> x y
>>
>> into
>>
>> x.+(y)
>>
>> ?
>>
>> Or if you only think strings should work that way, and not numbers:
>>
>> x.concat(y)
>>
>
> Because
>
> x y
>
> already means
>
> x(y)

Exactly my point.

	robert

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