代写代考 COMP 302

Programming Languages and Paradigms COMP 302
Prof. Errington

School of Computer Science Mc

Copyright By PowCoder代写 加微信 powcoder

Fall 2022 – Week 3, lesson 2

Announcements
􏰇 Elections: 3 October. Classes cancelled. (No effect to us.)
􏰇 Advance polling available. (See #announcements.)
􏰇 HW1 will be released today and will be due next Friday at 2am, i.e. in the night from Thursday to Friday.
􏰇 Solutions and grades should be released the following Monday or Tuesday at the latest.

Last time…
􏰇 Pattern-matching:

Last time…
􏰇 Pattern-matching:
􏰇 Match on multiple things at once by forming a tuple, i.e. match (a, b) with …

Last time…
􏰇 Pattern-matching:
􏰇 Match on multiple things at once by forming a tuple, i.e.
match (a, b) with … 􏰇 Match_failure exception

Last time…
􏰇 Pattern-matching:
􏰇 Match on multiple things at once by forming a tuple, i.e.
match (a, b) with …
􏰇 Match_failure exception
􏰇 let-expressions can also use patterns, i.e.
let p = e1 in e2 – useful for tuples!

Last time…
􏰇 Pattern-matching:
􏰇 Match on multiple things at once by forming a tuple, i.e.
match (a, b) with …
􏰇 Match_failure exception
􏰇 let-expressions can also use patterns, i.e.
let p = e1 in e2 – useful for tuples!

Last time…
􏰇 Pattern-matching:
􏰇 Match on multiple things at once by forming a tuple, i.e.
match (a, b) with … 􏰇 Match_failure exception
􏰇 let-expressions can also use patterns, i.e.
let p = e1 in e2 – useful for tuples!
let (p1, p2) = e1 in e2
􏰇 Special case: let x = e1 in e2
(A bare variable is the simplest pattern!)

Last time…
􏰇 Pattern-matching:
􏰇 Match on multiple things at once by forming a tuple, i.e.
match (a, b) with …
􏰇 Match_failure exception
􏰇 let-expressions can also use patterns, i.e.
let p = e1 in e2 – useful for tuples!
let (p1, p2) = e1 in e2
􏰇 Special case: let x = e1 in e2
(A bare variable is the simplest pattern!) 􏰇 Recursive types:

Last time…
􏰇 Pattern-matching:
􏰇 Match on multiple things at once by forming a tuple, i.e.
match (a, b) with …
􏰇 Match_failure exception
􏰇 let-expressions can also use patterns, i.e.
let p = e1 in e2 – useful for tuples!
let (p1, p2) = e1 in e2
􏰇 Special case: let x = e1 in e2
(A bare variable is the simplest pattern!) 􏰇 Recursive types:
􏰇 A linked list of cards, recursively defined: type hand = Empty | Card of card * hand

This time…
􏰇 Polymorphic types.
􏰇 Higher-order functions!

This time…
􏰇 Polymorphic types.
􏰇 Higher-order functions!
Buckle up.

Polymorphic types

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