Table 6-1 Objective-C type encodings
|
Code |
Meaning |
|
c |
A char |
|
i |
An int |
|
s |
A short |
|
l |
A long l is treated as a 32-bit quantity on 64-bit programs. |
|
q |
A long long |
|
C |
An unsigned char |
|
I |
An unsigned int |
|
S |
An unsigned short |
|
L |
An unsigned long |
|
Q |
An unsigned long long |
|
f |
A float |
|
d |
A double |
|
B |
A C++ bool or a C99 _Bool |
|
v |
A void |
|
* |
A character string (char *) |
|
@ |
An object (whether statically typed or typed id) |
|
# |
A class object (Class) |
|
: |
A method selector (SEL) |
|
[array type] |
An array |
|
{name=type...} |
A structure |
|
(name=type...) |
A union |
|
bnum |
A bit field of num bits |
|
^type |
A pointer to type |
|
? |
An unknown type (among other things, this code is used for function pointers) |