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B01 Introduction to Clojure

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70 Lessons

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Day 1: Syntax and REPL

Read Eval Print Loop (REPL)

Preview

Baking cookies - Calling functions

Preview

Exercise 1.1 – baking a cake

Defining functions with defn

Exercise 1.2 – several `add-` functions

Refactoring bake-cookies

Exercise 1.3 – bake-cake

Conditional branching with cond

Exercise 1.4 – rewrite bake-cake

Exercise 1.5 – scooped?

Exercise 1.6 – squeezed?

Two-branch conditionals with if and do

Exercise 1.7 – add-scooped and add-squeezed

Some convenience functions – bowl-for and add

Looping a fixed number of times – dotimes

Exercise 1.8 – add- functions

Exercise 1.9 – rewrite bake-cake

Accepting varying numbers of arguments – variadic functions

Exercise 1.10 – rewrite add to be variadic

Exercise 1.11 – rewrite bake-cake

Exercise 1.12 – rewrite bake-cookies

Conclusion

Day 2: Data Structures and Editor

Introduction to Day 2

Moving between locations

Sets and defining variables

Exercise 2.1

Exercise 2.2

Exercise 2.3

Maps and looping over collections

Get morning orders

Defining local variables with let

Exercise 2.4

Functional programming and data-driven programming

Nesting loops with doseq

Fetching ingredients

Refactoring fetch-for-cake to use fetch-ingredients

Merging maps with merge-with

Exercise 2.7

Modifying the values of a map with update-vals

Defining inline anonymous functions with fn

Exercise 2.8

Exercise 2.9

Converting a sequence of values to another sequence with map

Summing up with reduce

Exercise 2.10

Exercise 2.11

Generating a sequence of numbers with range

Concatenating two lists together with cat

Exercise 2.12

Day 2 Conclusion

Day3: Data-Driven Programming

Introduction to Day 3

Exercise 3.1

Exercise 3.2

Exercise 3.3

Exercise 3.4

Creating our first recipe in the database

Exercise 3.5

Exercise 3.6

Exercise 3.7

Removing unused code

Exercise 3.8

Exercise 3.9

Exercise 3.10

Exercise 3.11

Exercise 3.12

Dispatching to the correct add function

Exercise 3.13

BONUS Reading and writing EDN

BONUS Making code read top to bottom with thread last

Conclusion