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Which of the following defines "higher order function (HOF)" (select all that apply)
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a function A that takes another function B as an argument
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If a function A takes another function B as argument, then B is the HOF
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A function that takes more than zero or one parameters
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a function A that manufactures (when A runs) another function B to return as the result of running A
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In the previous option, B (the returned function) is actually the HOF
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A "pure" function, meaning a function that does not access any global data, and works only through its parameters
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a function that exhibits "referential transparency"
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