public inbox for kawa@sourceware.org
 help / color / mirror / Atom feed
* improved import syntax
@ 2015-09-29 23:15 Per Bothner
  0 siblings, 0 replies; only message in thread
From: Per Bothner @ 2015-09-29 23:15 UTC (permalink / raw)
  To: mikel evins, Kawa mailing list

In an import form, you can now use a classname (ie. a symbol usually
with dots), instead of a list.  I.e.:

(import org.example.Foo)

is equivalent to:

(import (org example Foo))

I don't remember if I announced the import-class form, but it's quite handy:

You can import multiple class from the same package with duplication:

(import (class java.util Map HashMap))

You can also rename it:

(import (class java.lang (StringBuilder StrBuf)))

The above is equivalent to:

(define-alias StrBuf java.lang.StringBuilder)

but with import-class you can import (and optionally rename) many classes
in a compact form.

You can combine the class clause with import's only, except, rename, and prefix clauses,
though only prefix is likely to be useful. For example:

(import (prefix (class java.lang Long Short) jl-))

is equivalent to

(import (class java.lang (Long jl-Long) (Short jl-Short)))

-- 
	--Per Bothner
per@bothner.com   http://per.bothner.com/

^ permalink raw reply	[flat|nested] only message in thread

only message in thread, other threads:[~2015-09-29 23:15 UTC | newest]

Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2015-09-29 23:15 improved import syntax Per Bothner

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).