Timeline for Closed linked-list which uses sentinels to avoid passing itself
Current License: CC BY-SA 4.0
7 events
| when toggle format | what | by | license | comment | |
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| Feb 27, 2021 at 21:03 | vote | accept | Neil | ||
| Dec 2, 2018 at 22:59 | history | edited | Edward | CC BY-SA 4.0 |
added 72 characters in body
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| Dec 2, 2018 at 22:56 | comment | added | Edward | Fair enough -- I've updated my answer to be more technically correct. Also see c-faq.com/null/nullor0.html | |
| Dec 2, 2018 at 22:37 | comment | added | Neil |
Thanks! Comment on your 1st point: I agree that the address 0 is not always a null pointer, and memset(pointer, 0, sizeof pointer) (ie, int 0) is not a way to get a null pointer. However, in pointer contexts, 0 is a null pointer, "The macro NULL is an implementation-defined null pointer constant, which may be an integer constant expression with the value 0." c-faq.com/null/null2.html. (Although stylistically, it may be better to use NULL.)
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| Dec 1, 2018 at 22:17 | comment | added | Edward | Further background for the curious: c-faq.com/null/machexamp.html | |
| Dec 1, 2018 at 22:04 | comment | added | Edward | Yes, it's a possibility but not guaranteed by the standard: stackoverflow.com/questions/9894013/is-null-always-zero-in-c | |
| Dec 1, 2018 at 20:45 | history | answered | Edward | CC BY-SA 4.0 |