class_copyPropertyList

gistfile1.txt

int outCount;
objc_property_t *properties = class_copyPropertyList([MyObject class], &outCount);
for(i = 0; i < outCount; i++) {
    objc_property_t property = properties[i];
    const char *c_attributes = property_getAttributes(property);
    printf("%s", c_attributes);
}
free(properties);

属性类型  name值：T  value：变化
编码类型  name值：C(copy) &(strong) W(weak) 空(assign) 等 value：无
非/原子性 name值：空(atomic) N(Nonatomic)  value：无
变量名称  name值：V  value：变化

R
The property is read-only (readonly).
C
The property is a copy of the value last assigned (copy).
&
The property is a reference to the value last assigned (retain).
N
The property is non-atomic (nonatomic).
G<name>
The property defines a custom getter selector name. The name follows the G (for example, GcustomGetter,).
S<name>
The property defines a custom setter selector name. The name follows the S (for example, ScustomSetter:,).
D
The property is dynamic (@dynamic).
W
The property is a weak reference (__weak).
P
The property is eligible for garbage collection.
t<encoding>
Specifies the type using old-style encoding.