Lecture overview -- Keyboard shortcut: 'u'  Previous page: A catch and throw example -- Keyboard shortcut: 'p'  Next page: Being more precise -- Keyboard shortcut: 'n'  Lecture notes - all slides together  Annotated slide -- Keyboard shortcut: 't'  Alphabetic index  Help page about these notes  Course home    Simulation of other Paradigms and Continuations - slide 25 : 43

The intuition behind continuations

A continuation of the evaluation of an expression E in a surrounding context C represents the future of the computation, which waits for, and depends on, the value of E


Context C and expression E

Intuitive continuation of E in C

(+ 5 (* 4 3))
The adding of 5 to the value of E
(cons 1 (cons 2 (cons 3 '())))
The consing of 3, 2 and 1 to the value of E
(define x 5)
(if (= 0 x)
    (remainder (* (+ x 1) (- x 1)) x))
The multiplication of E by x - 1 followed by a the calculation of the remainder by division of x