2011/9/5 Mark Rathwell <mark.rathw...@gmail.com>
> >> Huh, interesting. I assumed ^:foo meta syntax was new to 1.3, and
> >> wouldn't compile at all in 1.2. But now I see that in 1.2 it's
> >> equivalent to ^{:tag :foo} - not useful, but not damaging either. I
> >> guess I'll start using ^:dynamic myself.
> >
> > Actually, it causes compiler errors, when the compiler tries to use the
> > keyword as a typehint. Unfortunately, this occurs in a pseudo-randomly
> when
> > compiling code that uses the "hinted" var and leads to really cryptic
> error
> > messages.
> >> java.lang.RuntimeException: java.lang.IllegalArgumentException: Unable
> to
> >> resolve classname: :dynamic
>
> Sorry, trying to clarify, we're saying don't use ^:dynamic if you want
> to be compatible with 1.2? Instead use the full form ^{:dynamic
> true}?
>
Yes. More generally : not using ^:anything in your code is a necessary
condition for your code to be compatible with 1.2 (maybe not sufficient, I
do not remember all the potential incompatibilities)
>
> Thanks.
>
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