With the following function f (a, b, c, d), apply Hindley-Milner type checking and identify the type for each argument. f(a, b, c, d) = if b = 1 then else f(a,b,c,d) [] apply if a[1](0) then c(1) else c(d) if a[b](0) then c(b) else f(a, b - 1, c, d) def if apply if apply [] apply if apply apply

With the following function f (a, b, c, d), apply Hindley-Milner type checking and identify the type for each argument. f(a, b, c, d) = if b = 1 then else f(a,b,c,d) [] apply if a[1](0) then c(1) else c(d) if a[b](0) then c(b) else f(a, b - 1, c, d) def if apply if apply [] apply if apply apply

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

Start with:
f
a
b
C
d
(T2, T3,T4, T5)->T1
T2
T3
T4
T5

With the following function f (a, b, c, d), apply Hindley-Milner type checking and identify the
type for each argument.
f(a, b, c, d) = if b = 1 then
else
f(a,b,c,d)
[]
apply
if a[1](0) then
c(1)
else
c(d)
if a[b](0) then
c(b)
else
f(a, b - 1, c, d)
def
if
apply
1
if
apply
[]
apply
if
apply
apply

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