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Simple to-do

Overview​

This example illustrates how to create a simple to-do checklist application.

The application is built from the following Motoko source code files:

  • Utils.mo: contains the core functions for adding, completing, and removing to-do checklist items.
  • Types.mo: contains the type definition of a to-do checklist item.
  • Main.mo: contains the actor definition and methods exposed by this canister.

This is a Motoko example that does not currently have a Rust variant.

Prerequisites​

This example requires an installation of:

Begin by opening a terminal window.

Step 1: Navigate into the folder containing the project's files and start a local instance of the Internet Computer with the command:​

cd examples/motoko/simple-to-do
dfx start --background

Step 2: Deploy the canister:​

dfx deploy

Step 3: Create a to-do checklist by invoking the addTodo method:​

dfx canister call simple_to_do addTodo '("Create a project")'
dfx canister call simple_to_do addTodo '("Build the project")'
dfx canister call simple_to_do addTodo '("Deploy the project")'

Step 4: Display the to-do checklist by invoking the showTodos method:​

dfx canister call simple_to_do showTodos

Step 5: Verify the output returns the values you inputted:​

("
___TO-DOs___
(1) Create a project
(2) Build the project
(3) Deploy the project")

Step 6: Complete a to-do checklist item by invoking the completeTodo method:​

dfx canister call simple_to_do completeTodo '(1)'

Step 7: Display the to-do checklist by invoking the showTodos method.​

dfx canister call simple_to_do showTodos

Step 8: Verify the return value matches what you would expect.​

("
___TO-DOs___
(1) Create a project ✔
(2) Build the project
(3) Deploy the project")