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1. The Motoko Programming Language
2.
3. Part 1
4. 1. Introduction
❱
5. 1. 1.1. Getting Started
6. 2. Common Programming Concepts
❱
7. 1. 2.1. Variables
2. 2.2. Mutability
3. 2.3. Comments
4. 2.4. Types
❱
5. 1. 2.4.1. Tuples
2. 2.4.2. Records
3. 2.4.3. Variants
4. 2.4.4. Immutable Arrays
5. 2.4.5. Mutable Arrays
6. 2.5. Operators
❱
7. 1. 2.5.1. Numeric operators
2. 2.5.2. Relational operators
3. 2.5.3. Assignment operators
4. 2.5.4. Text concatenation
5. 2.5.5. Logical expressions
6. 2.5.6. Bitwise operators
7. 2.5.7. Operator precedence
8. 2.6. Pattern Matching
9. 2.7. Functions
10. 2.8. Options and Results
11. 2.9. Control Flow
❱
12. 1. 2.9.1. If Expression
2. 2.9.2. If Else Expression
3. 2.9.3. Switch Expression
13. 2.10. Objects and Classes
❱
14. 1. 2.10.1. Objects
2. 2.10.2. Classes
15. 2.11. Modules and Imports
16. 2.12. Assertions
8. 3. Internet Computer Programming Concepts
❱
9. 1. 3.1. Actors
❱
2. 1. 3.1.1. From Actor to Canister
2. 3.1.2. Canister Calls from Clients
3. 3.2. Principals and Authentication
4. 3.3. Async Data
❱
5. 1. 3.3.1. Shared Types
2. 3.3.2. Candid
6. 3.4. Basic Memory Persistence
❱
7. 1. 3.4.1. Upgrades
2. 3.4.2. Stable Variables
10.
11. Part 2
12. 4. Advanced Types
❱
13. 1. 4.1. Generic Types
2. 4.2. Subtyping
3. 4.3. Recursive Types
4. 4.4. Type Bounds
14. 5. The Base Library
❱
15. 1. 5.1. Primitive Types
❱
2. 1. 5.1.1. Bool
2. 5.1.2. Nat
3. 5.1.3. Int
4. 5.1.4. Float
5. 5.1.5. Principal
6. 5.1.6. Text
7. 5.1.7. Char
8. 5.1.8. Bounded Number Types
❱
9. 1. 5.1.8.1. Nat8
2. 5.1.8.2. Nat16
3. 5.1.8.3. Nat32
4. 5.1.8.4. Nat64
5. 5.1.8.5. Int8
6. 5.1.8.6. Int16
7. 5.1.8.7. Int32
8. 5.1.8.8. Int64
10. 5.1.9. Blob
3. 5.2. Utility Modules
❱
4. 1. 5.2.1. Iterators
2. 5.2.2. Hash
3. 5.2.3. Option
4. 5.2.4. Result
5. 5.2.5. Order
6. 5.2.6. Error
7. 5.2.7. Debug
5. 5.3. Data Structures
❱
6. 1. 5.3.1. Array
2. 5.3.2. List
3. 5.3.3. Buffer
4. 5.3.4. HashMap
5. 5.3.5. RBTree
7. 5.4. More Data Structures
8. 5.5. IC APIs
❱
9. 1. 5.5.1. Time
2. 5.5.2. Timer
3. 5.5.3. CertifiedData
4. 5.5.4. Random
5. 5.5.5. Experimental
16. 6. Advanced Concepts
❱
17. 1. 6.1. Async Programming
2. 6.2. Scalability
❱
3. 1. 6.2.1. Actor Classes
2. 6.2.2. Stable Storage
4. 6.3. System API's
❱
5. 1. 6.3.1. Message Inspection
2. 6.3.2. Timers
3. 6.3.3. Certified Variables
4. 6.3.4. Pre-upgrade and Post-upgrade
5. 6.3.5. Cryptographic Randomness
18.
19. Part 3
20. 7. Project Deployment
❱
21. 1. 7.1. Installing the SDK
2. 7.2. Local Deployment
3. 7.3. Canister Status
4. 7.4. Identities and PEM Files
5. 7.5. Cycles and ICP
6. 7.6. Cycles Wallet
7. 7.7. IC Deployment
22. 8. Common Internet Computer Canisters
❱
23. 1. 8.1. IC Management Canister
2. 8.2. ICP Ledger Canister
3. 8.3. Cycle Minting Canister
24. 9. Internet Computer Standards
❱
25. 1. 9.1. ICRC1
26. 10. Tokenized Comments Example
27.
28. APPENDIX
29. 11. TABLES
* Light
* Rust
* Coal
* Navy
* Ayu
THE MOTOKO PROGRAMMING LANGUAGE BOOK
INSTALLING THE SDK
The SDK (Software Development Kit) or sometimes called the CDK (Canister
Development Kit) is a command-line program (and related tools) that you can run
on your personal computer to develop canisters on the Internet Computer (IC).
After installing, the main program you will use (to manage and deploy canisters
from the command-line) is called dfx.
> NOTE
> As of April 2023: Work is underway for a Graphical User Interface for dfx
> NOTE
> The official docs provide more information on installing the SDK on all
> platforms
INSTALL STEPS
On Linux, MacOS or Windows WSL, we can install and configure the SDK in four
steps.
STEP 1: INSTALL
Run this script in the terminal:
sh -ci "$(curl -fsSL https://internetcomputer.org/install.sh)"
This will download and install the dfx binary in /home/USER/bin.
STEP 2: ADD TO PATH
Add the /home/USER/bin directory to your PATH variable by editing your
/home/USER/.bashrc file. Add these lines to the end of .bashrc.
#DFX
export PATH="/home/xps/bin/:$PATH"
Then run this command to activate the previous step
source .bashrc
If everything went well, then you can check your installation with
dfx --version
This should print the version of dfx that is installed.
STEP 3: CONFIGURE NETWORKS.JSON
To configure the local and mainnet networks used by dfx create a networks.json
file in /home/USER/.config/dfx/networks.json with the following
{
"local": {
"bind": "127.0.0.1:8080",
"type": "ephemeral",
"replica": {
"subnet_type": "application"
}
},
"ic": {
"providers": ["https://mainnet.dfinity.network"],
"type": "persistent"
}
}
STEP 4: RUN FOR THE FIRST TIME
Now run dfx for the first time
dfx start
This should create a version cache for dfx located at
/home/USER/.cache/dfinity/versions/
DEPENDENCIES
For dfx to work correctly, you need to have Node.js v16.0.0 (or higher)
installed on your system.
UNINSTALL
To uninstall dfx and related files you can run the uninstall.sh script. From
your home directory run
./.cache/dfinity/uninstall.sh
> NOTE
> The official docs provide more information on installing the SDK on all
> platforms