[swift-users] Localization in Swift.

Zhao Xin owenzx at gmail.com
Wed Nov 2 01:42:21 CDT 2016

I have already give a workable implementation above.

let count = 10
> let says = NSLocalizedString("
> ​blabla
> \(count)
> ​blabla
> ", comment: "
> ​blabla
> ")


let says =
> String.localizedStringWithFormat(NSLocalizedString("​blabla%​@​blabla",
> comment: "​blabla"), ​String(​count​)​

When encounter​ `NSLocalizedString`, Swift looks into its key, if it
​s key​
contains \(foo), just replace it as
comment: "​blabla"), ​String(​foo​)​`. If not, keep it unchanged.

That is enough.

In current situation, Swift still first calculates the value of string
first, then `NSLocalizedString` work. So it just needs to add a little work
to check if there is  any `\(foo)` in the string, instead of calculating
the value of string.


On Wed, Nov 2, 2016 at 2:09 PM, Jens Alfke <jens at mooseyard.com> wrote:

> > On Nov 1, 2016, at 10:56 PM, Zhao Xin <owenzx at gmail.com> wrote:
> >
> > I am not talking to eliminate "%" style function. I am talking to add
> more compatibility to `NSLocalizedString` with `\(foo)` style.
> I don’t think the ExpressibleByStringInterpolation protocol provides
> enough information to make this work. It hands the implementation a list of
> values to concatenate, some of which are strings, but as far as I can tell
> there’s no way to tell which of those strings are the pieces of the string
> literal and which of them are the results of expressions. So
> NSLocalizedString would not be able to reassemble the string template that
> you gave it, to look up in the localization table.
> If I’m wrong about this, show me a workable implementation of it. :)
> Also, ExpressibleByStringInterpolation is marked as being deprecated and
> will be “replaced or redesigned in Swift 4.0.” Maybe to solve this
> limitation?
> —Jens
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