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2:23 PM
This morning Mma 12.3 has decided that an occasional FE crash is a fitting response to searching the Doc Center.
@Szabolcs It evaluates to a numeric vector if x < y, which is what is plotted, and to False if x >= y, which is not plotted.
Block[{x = 0.3, y = 0.4},
 {x, y} && x < y // Trace
 ]
 
 
2 hours later…
4:26 PM
Does anyone know why this does not work?
DeleteCases[{{0, 0, 0, 0, 0, 0, d, 1, -1}, {0, 0, 0, 1, 0, 0, d,
1, -1}}, _?(#[[1 ;; 6]] == {0, 0, 0, 0, 0, 0}) &]
 
 
1 hour later…
5:39 PM
@anhnha Misplaced ) Try DeleteCases[{{0, 0, 0, 0, 0, 0, d, 1, -1}, {0, 0, 0, 1, 0, 0, d, 1, -1}}, _?(#[[1 ;; 6]] == {0, 0, 0, 0, 0, 0} &)]
 
6:00 PM
Yeah, I didn't realize that.
 
 
1 hour later…
7:13 PM
@MichaelE2 OK, I get it now. And[] simply drops True values.
 

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