[swift-evolution] URL Literals

[Micah Hainline]

True, but it's not at all about brevity, it's about type-safety and getting compile-time checking rather than runtime checking of the validity of the URL structure.

> On Dec 16, 2016, at 5:50 PM, Derrick Ho <wh1pch81n at gmail.com> wrote:
> 
> let url = URL(string: "https://example.com")!
> 
> let url = #url("https://example.com")
> 
> Are not that different in length. It really isn't saving you much.
> 
> I suppose you can try overloading an operator to get something to the effect you want.
>> On Fri, Dec 16, 2016 at 6:19 PM Micah Hainline via swift-evolution <swift-evolution at swift.org> wrote:
>> Exactly! It's not an earth-shattering pain, but it would be nice to have clean type safety there.
>> 
>> > On Dec 16, 2016, at 4:01 PM, Charlie Monroe <charlie at charliemonroe.net> wrote:
>> >
>> >
>> >>> On Dec 16, 2016, at 10:05 PM, Charles Srstka via swift-evolution <swift-evolution at swift.org> wrote:
>> >>>
>> >>> On Dec 16, 2016, at 2:46 PM, Micah Hainline via swift-evolution <swift-evolution at swift.org> wrote:
>> >>>
>> >>> I would like to be able to create a URL literal that is compile-time
>> >>> checked for correct format. This would help avoid code like this:
>> >>>
>> >>>  let url: URL = URL(string: "https://example.com")!
>> >>>
>> >>> The cleanest way I can think of doing that would be to introduce a new
>> >>> macro structure similar to #selector, though I'm open to other ideas.
>> >>> I would think it should take a quoted literal string to avoid
>> >>> problems. That would look like this:
>> >>>
>> >>>  let url: URL = #url("https://example.com")
>> >>>
>> >>> What does everyone think of that idea?
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>> >>
>> >>
>> >> I’d like to see something like that for file path URLs. For something so commonly used, URL(fileURLWithPath:) is obnoxiously verbose.
>> >>
>> >> Charles
>> >
>> > Yes, but it's not a nullable initializer. With URL(string:) the incredible pain is that even compile-time URLs to your own website are nullable URL? and you need to force-unwrap them.
>> >
>> >>
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