Explicit Application of Procedures

In Scheme, procedures are “first class (Scheme) objects” and can be manipulated as data, e.g., passed as arguments to other procedures.

They can be explicitly (as well as implicitly) applied.

; Implicit application of +

> (+ 1 2 3)

6

; Explicit application of +

> (apply + (list 1 2 3))

6

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