Short Head Line Weak Head Line Thin Head Line Absent Head Line
Weak Head Normal Form. Web evaluates its first argument to head normal form, and then returns its second argument as the result. So, seq forced the list to be evaluated but not the components that make.
Short Head Line Weak Head Line Thin Head Line Absent Head Line
Seq is defined as follows. The first argument of seq will only be evaluated to weak head normal form. Alonzo church was alan turing’s doctoral advisor, and his lambda calculus predates turing machines. So, seq forced the list to be evaluated but not the components that make. Web reduce terms to weak normal forms only. An expression in weak head normal form has been evaluated to the outermost data constructor or lambda abstraction (the head). Web there is also the notion of weak head normal form: Web i have question about weak head normal form and normal form. Therefore, every normal form expression is also in weak head normal form, though the opposite does not hold in general. The evaluation of the first argument of seq will only happen when the.
A term in weak head normal form is either a term in head normal form or a lambda abstraction. Web reduce terms to weak normal forms only. Alonzo church was alan turing’s doctoral advisor, and his lambda calculus predates turing machines. An expression is in weak head normal form (whnf), if it is either: Now, i have following expression: Normal form means, the expression will be fully evaluated. Web evaluates its first argument to head normal form, and then returns its second argument as the result. But more importantly, working through the theory from its original viewpoint exposes us to different ways of thinking. Therefore, every normal form expression is also in weak head normal form, though the opposite does not hold in general. Aside from a healthy mental workout, we find lambda calculus is sometimes superior: Whnf [ (\x.y) z ] = false (1) whnf [ \x.
