Re: Better string constants

I don't see any reason not to allow multiline strings with the actual syntax:

"
A: {
       a: 'a'
       b: 'b'
       c: 'c'
}
"

An alternative syntax could be provided to avoid abusing escaping:

"""
A: {
       a: "a"
       b: "b"
       c: "c"
}
"""

If coil works as shown by bruce i don't even think the alternative
syntax is too important.
I also don't think a raw syntax is worth a new syntax.

Cheers

2013/2/28 Bruce Mitchener <[email protected]>:
> I'm +1 on """ ... """
>
> But I'm +10 on being able to improve your life today. :)
>
>  - Bruce
>
>
>
> On Thu, Feb 28, 2013 at 7:47 PM, Carl Gay <[email protected]> wrote:
>>
>> okay, that's fine with me as long as r-parser goes in common-dylan.  We
>> still need """ though.
>>
>>
>> On Wed, Feb 27, 2013 at 10:58 PM, Bruce Mitchener
>> <[email protected]> wrote:
>>>
>>> It isn't a proposal that needs implementing. It works right now in every
>>> release since Open Dylan was open sourced. Go try it.
>>>
>>>  - Bruce
>>>
>>>
>>>
>>> On Thu, Feb 28, 2013 at 10:54 AM, Carl Gay <[email protected]> wrote:
>>>>
>>>> Even if we implemented your proposal for parsers, I still think we need
>>>> better string literals.  At least """, but we could conceivably implement #r
>>>> as parse-r.  :-)
>>>>
>>>>
>>>> On Wed, Feb 27, 2013 at 10:00 PM, Bruce Mitchener
>>>> <[email protected]> wrote:
>>>>>
>>>>> define constant coil-parser = parse-coil;
>>>>>
>>>>> let c = #coil:[
>>>>>
>>>>>   A: {
>>>>>     a: 'a'
>>>>>     b: 'b'
>>>>>     c: 'c'
>>>>>   }
>>>>> ];
>>>>>
>>>>> Suspect that works right now in OpenDylan 2012.1.
>>>>>
>>>>>  - Bruce
>>>>>
>>>>>
>>>>>
>>>>> On Thu, Feb 28, 2013 at 9:55 AM, Carl Gay <[email protected]> wrote:
>>>>>>
>>>>>> I really want better string constant syntax in Dylan.  Doing this sort
>>>>>> of thing...
>>>>>>
>>>>>>   parse-coil("A: {\n"
>>>>>>              "    a: 'a'\n"
>>>>>>              "    b: 'b'\n"
>>>>>>              "    c: 'c'\n"
>>>>>>              "}\n"
>>>>>>              ...
>>>>>> or
>>>>>>   "\"5\""
>>>>>>
>>>>>> is really tedious and error prone.  (Both of the above are from a test
>>>>>> suite.)
>>>>>>
>>>>>> We need two things:
>>>>>>   (1) raw string literals
>>>>>>   (2) multi-line strings
>>>>>>
>>>>>> Briefly, my suggestions are:
>>>>>> * Use """ for multiline backslash-interpreted strings.
>>>>>> * Use ` (backquote) for one-line raw strings.
>>>>>> * Use ``` for multi-line raw strings.
>>>>>>
>>>>>> `"5"` == "\"5\""
>>>>>> `\d+\.` == "\\d+\\."
>>>>>> ```A: {
>>>>>>   a: 'a'
>>>>>>   b: 'b'
>>>>>>   c: 'c'
>>>>>> }``` == the string near the top of this message.
>>>>>>
>>>>>> While I think it may be possible to use `...` for multi-line raw
>>>>>> strings (as Go does) it bothers me that there's no way to embed a backquote,
>>>>>> and also I like having the symmetry of "..." / """...""" and `...` /
>>>>>> ```...```.
>>>>>>
>>>>>> Another possibility I like is #r"..." and #r"""...""" for raw strings.
>>>>>>
>>>>>> Thoughts/opinions?
>>>>>>
>>>>>>
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>>>>>
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