所以,我用NSArrays了很多,所以我决定尝试创建,将创建传递原语的数组宏的基础上,宏这里:自动装箱NSArray?
https://bitbucket.org/snej/myutilities/src/319441e240fa/CollectionUtils.h
#define $array(values...) ({ void *v[] = { values }; const char *encodings[] = { /* how do I get the @encode-ings for each? */ }; _boxArray(v, encodings, sizeof(values)/sizeof(void *))})
NSValue *_box(void *value, const char *encoding); // defined by CollectionUtils
NSArray *_boxArray(void **values, const char **encodings, int count)
{
id objects[count];
for (int i = 0; i < count; i++) {
// how can I box all of the values that need boxing?
objects[i] = _box(values[i], encodings[i]);
}
return [NSArray arrayWithObjects:objects count:count];
}
所以基本上,我问的是,如何通过可变宏来对每个传递给宏的参数执行操作?
什么都没有,呃? – 2012-03-03 00:17:22