A function that prints it self

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Asked 7 years, 7 months ago

Modified 7 years, 7 months ago

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This function prints it self, can someone please explain how it works?

Print[ToString[#0][]]& []

asked May 12, 2017 at 23:33

Henry Wang

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$\begingroup$ Technically it prints Print[ToString[#0][]]& as a string and [] appended to it. Just replace Print with CellPrint or copy the output as InputText and you'll see what I mean. $\endgroup$
– swish
Commented May 13, 2017 at 0:03
1

$\begingroup$ Examine Print[ToString[#0][]] &[] // Trace. Convert the output to input to help distinguish strings from symbols. $\endgroup$
– Michael E2
Commented May 13, 2017 at 1:01
1

$\begingroup$ This is related. $\endgroup$
– J. M.'s missing motivation ♦
Commented May 17, 2017 at 11:48

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