Cat’s hacks:


 (def testify (x)
-  (if (isa x 'fn) x [is _ x]))
+  (if (isa x 'fn) x [iso _ x]))

Allow lists to be used as the first argument to Arc's list sequence functions.

(rem '(c d) '((a b) (c d) (e f)))((a b) (c d) (e f)) ((a b) (e f))
(pos '(4 5) '(1 2 3 (4 5) 6))nil3

Get This Hack

Apply This Hack to Your Arc

By using git or patch, you can incorporate this patch into your version of Arc.

With git

 $ git pull git:// tag arc2.testify-iso0

For example,

 $ mkdir arc
 $ cd arc
 $ git init
 $ git pull git:// tag arc2.testify-iso0

With patch

To apply this patch to your copy of arc using the patch command, download arc2.testify-iso0.patch into your Arc directory, and at the Unix command line inside the Arc directory, type:

 patch <arc2.testify-iso0.patch

patch” is a standard utility that comes with Unix. (If you’re running Windows, iirc patch comes with cygwin).

For example,

 $ wget
 [... downloading ...]
 $ tar xf arc2.tar
 $ cd arc2
 $ patch <arc2.testify-iso0.patch
 patching [...]


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