From 7c51cdee370b0192b44cfa478a49cbcce670fc24 Mon Sep 17 00:00:00 2001 From: Jan Sucan Date: Fri, 10 Mar 2023 17:04:45 +0100 Subject: 3_b_2: Add solution --- README.md | 2 +- ch03/3_b_1.hs | 8 ++++++-- 2 files changed, 7 insertions(+), 3 deletions(-) diff --git a/README.md b/README.md index 113edbb..2b028e4 100644 --- a/README.md +++ b/README.md @@ -54,7 +54,7 @@ more visible in the list the first exercise of a group is in bold italics. | **_3_a_1_** | yes | 60 | 3. Defining types, streamlining functions | | 3_a_2 | yes | | | | **_3_b_1_** | yes | 69 | | -| 3_b_2 | | | | +| 3_b_2 | yes, in 3_b_1 | | | | 3_b_3 | | | | | 3_b_4 | | | | | 3_b_5 | | | | diff --git a/ch03/3_b_1.hs b/ch03/3_b_1.hs index 4db9c0c..564b6be 100644 --- a/ch03/3_b_1.hs +++ b/ch03/3_b_1.hs @@ -1,6 +1,10 @@ --- Write a function that computes the number of elements in a list. To test it, --- ensure that it gives the same answers as the standard length function. +-- 1. Write a function that computes the number of elements in a list. To test +-- it, ensure that it gives the same answers as the standard length function. +-- +-- 2. Add a type signature for your function to your source file. To test it, +-- load the source file into ghci again. +myLength :: [a] -> Int myLength (x:xs) = 1 + myLength xs myLength [] = 0 -- cgit v1.2.3