[swift-users] hasSuffix(_:) and .hasPrefix(_:) String methods missing on Linux

[Alessandro Morgantini]

Clear.
For my needs, this chunk of code at the beginning of my file is sufficient:

#if !_runtime(_ObjC)
extension String {
    public func hasPrefix(prefix: String) -> Bool {
        return prefix ==
String(self.characters.prefix(prefix.characters.count))
    }
    public func hasSuffix(suffix: String) -> Bool {
        return suffix ==
String(self.characters.suffix(suffix.characters.count))
    }
}
#endif

Thank you guys!


On Fri, Dec 11, 2015 at 12:51 PM, Alex Blewitt <alex.blewitt at gmail.com>
wrote:

> FYI:
>
>
> https://github.com/apple/swift/blob/master/stdlib/public/core/StringLegacy.swift#L73
>
> These two functions are (currently) only available with the Objective-C
> bridge, which the Linux port doesn’t have.
>
> Alex
>
> On 11 Dec 2015, at 11:48, Alex Blewitt <alex.blewitt at gmail.com> wrote:
>
> They may come as extensions from NSString, which Swift doesn’t have fully
> implemented on Linux yet.
>
> Alex
>
> On 11 Dec 2015, at 11:18, Alessandro Morgantini via swift-users <
> swift-users at swift.org> wrote:
>
> Hello to everyone!
> I'm a very newbie to Swift, I'm doing first experiments on Linux & Mac and
> I have the following issue: if I call the hasSuffix(_:) or the
> hasPrefix(_:) methods on a String instance, I obtain the following error:
>
> $ swiftc prova.swift
> prova.swift:110:4: error: value of type 'String' has no member 'hasSuffix'
> if pippo.hasSuffix("ao") {
>    ^~~~~ ~~~~~~~~~
>
> Same code works well on OS X.
> I'm using Ubuntu 14.04 with required dependencies (clang and libicu-dev)
> installed.
> Any idea?
>
> Cheers, Alessandro
>
> --
> Ing. Alessandro Morgantini - http://www.morgantini.org/
> Email: gpz500 at technologist.com
> Cell.: +39-347 761 1221 - Fax: +39-390 347 761 1221
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>
>
>


-- 
Ing. Alessandro Morgantini - http://www.morgantini.org/
Email: gpz500 at technologist.com
Cell.: +39-347 761 1221 - Fax: +39-390 347 761 1221
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