Higher-order functions: Difference between revisions
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[[File:Fōrmulæ - Higher-order functions 11.png]]
Since the '''Apply twice''' function returns a function, it can be immediately invoked:
[[File:Fōrmulæ - Higher-order functions 12.png]]
[[File:Fōrmulæ - Higher-order functions 11.png]]
It can also take a pure symbol, in order to retrrieve a symbolic result:
[[File:Fōrmulæ - Higher-order functions 13.png]]
[[File:Fōrmulæ - Higher-order functions 14.png]]
=={{header|GAP}}==
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