String identity template tag

[Michael Luder-Rosefield]

Why not String.tag or .tagged?

While we're at it, is there any good reason not to have something like this:

```
String.template = (template : String, taggerFn=String.identity/tag/tagged :
Function) => (keys : Array | Object) => taggerFn(template, (keys is Array)
? ...keys : keys)
// apologies for pseudo-semi-functional code
// having keys be an object allows template to be filled by key name rather
than just index
```
This would make templates closer to the traditional usage, where the
template comes first and is later passed values to be filled in with.
Having the taggerFn as an argument allows for things like Isiah's
escape-then-apply tagging examples.


On Wed, 12 Dec 2018 at 12:51 Isiah Meadows <isiahmeadows at gmail.com> wrote:

> I'm not married to `identity`, and I agree the name is probably not
> ideal. I'm more concerned about functionality, though.
>
> -----
>
> Isiah Meadows
> contact at isiahmeadows.com
> www.isiahmeadows.com
>
> On Tue, Dec 11, 2018 at 5:41 AM T.J. Crowder
> <tj.crowder at farsightsoftware.com> wrote:
> >
> > On Mon, Dec 10, 2018 at 7:08 PM Isiah Meadows
> > <isiahmeadows at gmail.com> wrote:
> > >
> > > It'd be *way* easier to construct simple template tags if there was a
> > > built-in identity tag
> >
> > Wholeheartedly agree, a couple of months ago I considered posting
> something very similar, both for utility reasons and in hopes that it would
> be an optimization target (being a standard operation).
> >
> > I find the name `identity` unilluminating, though, partially because
> it's not quite the same meaning as the usual "identity" function (`function
> identity(x) { return x; }`), though it's close. `assemble`?
> >
> > -- T.J. Crowder
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