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| raydiak | turns out it's giving me the array's contents instead of a pointer to it :) just not sure yet precisely where it's going wrong | 00:48 | |
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| raydiak | would someone kindly elucidate the '*(void **)ptr' idiom for me? it's hard to google :P | 03:09 | |
| japhb | raydiak: The variable 'ptr' is actually a pointer to a pointer. So dereference the first level of pointer to retrieve the inner pointer. | 03:28 | |
| This is often used to allow you to pass a pointer into a function and let the function change it. So you pass in a pointer to the pointer, and the function does *(void **)ptr = ... | 03:29 | ||
| And then the calling function can see the change. | 03:30 | ||
| raydiak | hm...well...this is what breaks my carray csting patch: github.com/MoarVM/MoarVM/commit/b6...f3bebac730 | 03:31 | |
| *casting | |||
| so I guess it makes sense, b/c I'm ending up with the array contents instead of a pointer to it | 03:32 | ||
| but I don't see how that commit I just pasted should even work without other changes elsewhere...???... | 03:34 | ||
| japhb | I'm guessing that it originally did not match the code elsewhere, and this fix brought it in line with that other code. | 03:35 | |
| raydiak | ah | ||
| but we don't have that extra level of indirection in the case of arrays? | 03:36 | ||
| I guess I'll have to read more now that I kinda understand | |||
| japhb | I don't actually know that section of code well; I'm just interpreting the evidence. ;-) | ||
| raydiak | I appreciate the guidance :) | 03:37 | |
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| JimmyZ | rurban_: in case of you missing it : irclog.perlgeek.de/moarvm/2015-01-30#i_10032597 | 09:40 | |
| rurban_ | Yes, I know | 09:57 | |
| thanks | |||
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