| --- Log opened Fri Mar 18 00:00:42 2022 |
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| 07:03 | < Pink> | Does html even have a concept of a text cursor for the page? |
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| 08:31 | <~Vorntastic> | I mean in a form field |
| 08:31 | <~Vorntastic> | But, sometimes |
| 08:52 | <~Vorntastic> | Hmmm, sort of. You can find the location of the cursor in the abstract text, but that doesn't give you pixel position. Suppose you could do a ghost element that matches the content and has an element you can find the location of at the cursor |
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| 11:02 | <@gnolam> | https://pbs.twimg.com/media/FODaCLdXsAcmzRm?format=jpg&name=4096x4096 |
| 13:10 | <@celticminstrel> | AFAIK HTML does not have that concept for the page, but some browsers certainly do. |
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| 20:26 | <&ToxicFrog> | https://nitter.net/lunasorcery/status/1504900067098046464 |
| 20:28 | <~Vornicus> | evil |
| 20:28 | <&ToxicFrog> | I know! |
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| 20:33 | | * Emmy doesn't get it |
| 20:51 | < ErikMesoy> | Emmy: The joke is that luna is telling fibs, the code examples are not doing arithmetic, they're doing funky operations which happen to look like arithmetic in this specific case. |
| 20:55 | <&ToxicFrog> | Yeah, it's exploiting the fact that "foo" is, under the hood, a pointer to a constant string in the .data segment, and that (a) math on pointers is legal and (b) * can be either the multiplication operator or the pointer dereference operator depending on context. |
| 20:56 | <&ToxicFrog> | So "-0.5" + 1 increments the pointer and ends up pointing to the "0" in "0.5" |
| 20:57 | <&ToxicFrog> | And 50**"2" is (50 * (*"2")), which derefences the pointer to get the ASCII character value of '2' -- which is 50 -- then multiplies that by 50. |
| 20:57 | < ErikMesoy> | You may find it educational to execute puts("hello world"+2); for a concrete understanding of what's going on underneath. |
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| --- Log closed Sat Mar 19 00:00:44 2022 |