Here is what I use for this sort of logic:
function is_installed(pkgstr::AbstractString)
try
Pkg.installed(pkgstr) === nothing ? false: true
catch
false
end
end
On Mon, Jun 27, 2016 at 12:12 PM, David Anthoff <anth...@berkeley.edu>
wrote:
> I’m trying to use ``using`` in a try catch block, but that doesn’t seem to
> be supported.
>
>
>
> Any other way around this? Essentially I want to load a package, and if
> the package is not installed, automatically do a ``Pkg.add``.
>
>
>
> I could of course get a list of all the installed packages and see if the
> one I need is there, but given the slowness of the package manager, I would
> prefer to just try to load it first, and only if that fails attempt to
> ``Pkg.add``.
>
>
>
> Thanks,
>
> David
>
>
>
> --
>
> David Anthoff
>
> University of California, Berkeley
>
>
>
> http://www.david-anthoff.com
>
>
>
