[swift-users] the pain of strings

Kyle Murray kyle_murray at apple.com
Fri Jun 30 20:06:13 CDT 2017


Hi David,

You can see the new APIs for Swift 4's String here: https://developer.apple.com/documentation/swift/string?changes=latest_minor <https://developer.apple.com/documentation/swift/string?changes=latest_minor>

The page indicates changes and additions since Xcode 8.3's Swift 3.1, corresponding with the version of Swift 4 that's in Xcode 9 beta 2.

Hope this helps,
Kyle

> On Jun 30, 2017, at 5:57 PM, David Baraff via swift-users <swift-users at swift.org> wrote:
> 
> I only know a little bit of what I’ve read online in blog posts and such.  I don’t have access to the Swift 4 API documentation, since i’m not running the xcode beta yet.
> 
> Is there someplace I can see the actual new API’s for String, in swift 4?  i googled but haven’t found it yet.
> 
> 
>> On Jun 30, 2017, at 5:44 PM, Adrian Zubarev <adrian.zubarev at devandartist.com <mailto:adrian.zubarev at devandartist.com>> wrote:
>> 
>> Well you’ve mentioned Swift 4 in your original post, therefore I provided a solution using Swift 4. It’s returning a view called `Substring`.
>> 
>> -- 
>> Adrian Zubarev
>> Sent with Airmail
>> 
>> Am 1. Juli 2017 um 00:38:42, David Baraff (davidbaraff at gmail.com <mailto:davidbaraff at gmail.com>) schrieb:
>> 
>>> I’m sorry, but I don’t see suffix() as a member function in any documentation, nor does it complete in Xcode.
>>> Is this perhaps only in Swift 4?
>>> 
>>> If so, that’s a definite improvement!
>>> 
>>> 
>>> Begin forwarded message:
>>> 
>>>> From: Adrian Zubarev <adrian.zubarev at devandartist.com <mailto:adrian.zubarev at devandartist.com>>
>>>> Subject: Re: [swift-users] the pain of strings
>>>> Date: June 30, 2017 at 3:13:42 PM PDT
>>>> To: David Baraff <davidbaraff at gmail.com <mailto:davidbaraff at gmail.com>>
>>>> Cc: swift-users at swift.org <mailto:swift-users at swift.org>
>>>> 
>>>> This looks way better than the subscript in Python and 1000 times better than your example. It might be a good idea to look up possible API first before writing such ugly long lines. I mean they get the job done, but just why so complicated? :(
>>>> 
>>>> 
>>>> 
>>>> 
>>>> 
>>>> -- 
>>>> Adrian Zubarev
>>>> Sent with Airmail
>>>> 
>>>> Am 1. Juli 2017 um 00:08:47, Adrian Zubarev (adrian.zubarev at devandartist.com <mailto:adrian.zubarev at devandartist.com>) schrieb:
>>>> 
>>>>> let longString = "1234567890"
>>>>> print(longString.suffix(2)) // prints "90"
>>>>> 
>>>>> 
>>>>> -- 
>>>>> Adrian Zubarev
>>>>> Sent with Airmail
>>>>> 
>>>>> Am 30. Juni 2017 um 23:45:01, David Baraff via swift-users (swift-users at swift.org <mailto:swift-users at swift.org>) schrieb:
>>>>> 
>>>>>> I know, I’ve read tons about about this. I sympathize. Unicode, it’s all very complex.
>>>>>> 
>>>>>> But.
>>>>>> 
>>>>>> BUT.
>>>>>> 
>>>>>> Python:
>>>>>> shortID = longerDeviceID[-2:] # give me the last two characters
>>>>>> 
>>>>>> Swift:
>>>>>> let shortID = String(longerDeviceID.characters.dropFirst(longerDeviceID.characters.count - 2))
>>>>>> 
>>>>>> I can’t even read the above without my eyes glazing over. As has been pointed out, an API which demands this much verbosity is crippling for many developers, to say the least.
>>>>>> 
>>>>>> With Swift 4, am I correct that it will be at least:
>>>>>> 
>>>>>> let shortID = String(longerDeviceID.dropFirst(longerDeviceID.count - 2))
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> _______________________________________________
>>>>>> swift-users mailing list
>>>>>> swift-users at swift.org <mailto:swift-users at swift.org>
>>>>>> https://lists.swift.org/mailman/listinfo/swift-users <https://lists.swift.org/mailman/listinfo/swift-users>
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