foreach: allow a single argument to foreach_int() and foreach_ptr().
[ccan] / ccan / foreach /
drwxr-xr-x   ..
lrwxrwxrwx 21 LICENSE -> ../../licenses/LGPL-3
-rw-r--r-- 1822 _info
-rw-r--r-- 3224 foreach.c
-rw-r--r-- 3656 foreach.h
drwxr-xr-x - test