[swift-evolution] multi-line string literals.

[Ricardo Parada]

I don't think the intent of multi-line string literals is to replace files or templating libraries. I use those all the time and are superior. 

I think it would be handy and make it more pleasant to use for simple cases. 

Who has not run into a little multi-line literal in your code where you concatenate the pieces using +, add \n at the end of each line and have to escape quotes?


> On May 12, 2016, at 12:36 PM, Leonardo Pessoa <me at lmpessoa.com> wrote:
> 
> I'm not in favour of multiline strings. I believe such strings should be stored in plain files and loaded as needed. It makes both the code and the string cleaner to read and maintain. I've had experiences with many languages that offer that resource and I could see what your code can become in terms of maintainability when you have such feature on the language.
> 
> -1 from me.
> 
> - Leonardo
> 
>> On 12 May 2016 at 01:05, Eduardo Mourey Lopez Ne via swift-evolution <swift-evolution at swift.org> wrote:
>> Something like this might work
>> 
>> //string ends on the first line that doesnt start with a "
>> foo( @"<?xml version="1.0"?>
>>        "<catalog>
>>        "   <book id="bk101" empty="">
>>        "       <author>\(author)</author>
>>        "       <title>XML Developer's Guide</title>
>>        "       <genre>Computer</genre>
>>        "       <price>44.95</price>
>>        "       <publish_date>2000-10-01</publish_date>
>>        "       <description>An in-depth look at creating applications with    XML.</description>
>>        "   </book>
>>        "</catalog>\n
>>     )
>> 
>> //additionally using a +" could be used to indicate a line break
>> foo( @"<?xml version="1.0"?>
>>       +"<catalog>
>>       +"   <book id="bk101" empty="">
>>       +"       <author>\(author)</author>
>>       +"       <title>XML Developer's Guide</title>
>>       +"       <genre>Computer</genre>
>>       +"       <price>44.95</price>
>>       +"       <publish_date>2000-10-01</publish_date>
>>       +"       <description>An in-depth look at creating applications with    XML.</description>
>>       +"   </book>
>>       +"</catalog>\n
>>     )
>> 
>>> On May 11, 2016, at 9:48 PM, Ricardo Parada via swift-evolution <swift-evolution at swift.org> wrote:
>>> 
>>> 
>>> 
>>> On May 11, 2016, at 2:34 PM, Vladimir.S <svabox at gmail.com> wrote:
>>> 
>>>>> For example:
>>>>> 
>>>>> 
>>>>> letsourceCode =@“NSString *firstName = @“John”;
>>>>>                 "NSString *lastName = @“Doe”;
>>>>>                 “NSString *fullName = [NSString stringWithFormat: @“%@
>>>>> %@“, firstName, lastName];"@
>>>>> 
>>>>> The one that would be a bit of a problem is the closing delimiter,
>>>> 
>>>> Yes.. this is why I asked about `"@` - closing delimiter
>>>> so.. what is the solution in your case ?
>>> 
>>> Hi Vladimir,
>>> 
>>> I don't really have a solution. Perhaps escaping the closing delimiter like this \"@
>>> 
>>> It is not pretty but I can't think of anything else. I imagine the other alternatives, i.e.   the triple quote `"""` and the quote plus underscore `"_ `  have the same problem. 
>>> 
>>> If we make the continuation quote required then we don't need a closing delimiter. That would solve the problem. But I've seen several people say they don't like the continuation quote because they want to be able to paste text and not have to worry much about formatting it afterwards. 
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>> 
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