Created
April 5, 2012 00:53
duff's device
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#include <stdio.h> | |
#define coro(b) \ | |
static int __cont = 0; \ | |
switch (__cont) { case 0:; \ | |
b } | |
#define yield(v) \ | |
do { \ | |
__cont = __LINE__; \ | |
return v; case __LINE__:; \ | |
} while (0) | |
int | |
odd() { | |
static int i = 1; | |
coro({ | |
while (1) { | |
yield(i); | |
i += 2; | |
} | |
}) | |
return 0; | |
} | |
int | |
main(void) { | |
for (int i = 0; i < 10; ++i) printf("%d\n", odd()); | |
} |
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that's so horrible. :)