Timeline for What's the function that takes X[Y[z___]] to Y[X[z___]]? ("swap heads")
Current License: CC BY-SA 3.0
4 events
| when toggle format | what | by | license | comment | |
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| Jun 14, 2015 at 18:17 | vote | accept | kjo | ||
| Jun 14, 2015 at 5:45 | comment | added | Dan Oak | @kjo, {X,Y} = {Y,X} will swap values. maybe this is the remark you've confused with your question? | |
| Jun 13, 2015 at 21:23 | comment | added | kjo | Thank you! I thought I once came across a remark in the docs to the effect that some built-in function could be easily used to do this head-swapping operation, and in fact it was routinely used for this... I'll wait a bit longer to see if my memory is not tricking me. But if it is, then your solution shows that it's trivial to roll one's own. | |
| Jun 13, 2015 at 21:08 | history | answered | Kuba | CC BY-SA 3.0 |