Haskell Course - Lesson 8 - Creating Non-Parameterized Types

Outline:
0:00 - Outline
0:57 - Type Synonyms
1:57 - Why use Type Synonyms
5:39 - Creating new types
7:30 - Using our new type
9:35 - Value Parameters
13:44 - Why use Record Syntax
16:03 - Record Syntax

#haskell #beginners #creating #types

[jw]

Thanks for these great lessons. Looking forward to Lesson 9 and10!

[braejan]

I never had before found a pretty clear and good explanation of types in Haskell!

[jonkoxl]

Great video series, very well explained!

[pxkqd]

Slow and steady wins the race! Thanks for releasing this consistently.

[alexanderskusnov]

For records there is also a convenient operator & (called "euro" as it equals flip $). So we write circ & area, rect1 & area like in the other languages (cicr.area, rect1.area).

[robertschwede]

Thanks for this lecture. While I read about creating own types before, this really helped to get a better understanding. Following this course, I played around with Haskell and wrote some toy programs. While I managed to make them do what I wanted, the code feels unnatural or clumsy at times. Is there any good place where I could get a code review for my beginner programs?

[geoffjacobs]

In this video, inside 13 minutes is the example of calculating area. I understand the signature, and the area functions that follow. But below that are: area smallCircle and area rect2 . Could you elaborate on them? Why is "smallCircle" and "rect2" following the function being called? Why not numbers?

[Naveen-bscq]

Amazing content as always! Thank you for the effort.

I noticed that I cannot create multiple record types with same field names. Is there any way around this? Feels very limiting