diff options
| -rw-r--r-- | README.md | 27 |
1 files changed, 23 insertions, 4 deletions
@@ -45,8 +45,8 @@ Simple example (ABI level) hi there, world! >>> -Simple example (API level) --------------------------- +Real example (API level) +------------------------ from cffi import FFI ffi = FFI() @@ -64,8 +64,27 @@ Simple example (API level) assert str(C.getpwuid(0).pw_name) == 'root' Note that the above example works independently of the exact layout of -"struct passwd", but so far require a C compiler at runtime. (This will -be improved with caching and distribution of the compiled code.) +"struct passwd", but so far require a C compiler at runtime. (We plan +to improve with caching and a way to distribute the compiled code.) + +Struct/Array Example +-------------------- + + from cffi import FFI + ffi = FFI() + ffi.cdef(""" + typedef struct { + unsigned char r, g, b; + } pixel_t; + """) + image = ffi.new("pixel_t[]", 800*600) + image[0].r = 255 + image[0].g = 192 + image[0].b = 128 + +This can be used as a more flexible replacement of the struct_ and +array_ modules. You could also call ``ffi.new("pixel_t[600][800]")`` +and get a two-dimensional array. More documentation |