The state of string interpolation...one year later

Sun Mar 17 23:21:55 UTC 2019

I like the idea and find the tuple approach very elegant.

On Sunday, 17 March 2019 at 14:01:36 UTC, ag0aep6g wrote:
>     void writeflnToHTML(S ...)(string f, S stuff)
>     {
>         writefln(f, tupleMap!toHTML(stuff).expand);
>     }
>     writeflnToHTML(`<html><body>
>         <title>%s</title>
>         <name>%s</name><age>%s</age>
>         <a href="%s">%s</a>
>         </body></html>
>     `, title, name, age, link, linkName);
>
> That's still not pretty at all, but we can't forget a `.toHTML` 
> this way. (Though `tupleMap` isn't in phobos and might be hard 
> to get exactly right.)
>
> Ideally, something like that would be possible with 
> interpolated strings, too.

As long as the embedded expressions are always separated by a 
string literal in the resulting tuple, incl. an empty one 
(`i"$(a)$(b)"` => `"", a, "", b`), these embedded expressions can 
be identified (and appropriately transformed etc.) by an odd 
index.