Hello World example in Rust

this is forked from Counter example in Rust (https://github.com/near-examples/rust-counter). Modified to do hello world.

lib.rs

add get_helloworld(), add corresponding unit test
remove other methods, remove corresponding unit test

remove src/tests/sim/test.rs

main.js, index.html

add call to get_helloworld(), remove call to increment, decrement, get_num().

Description

This contract implements bare minimum hello world Contract in contract/src/lib.rs provides methods to get a hello world string.

To Run

Open in the Gitpod link above or clone the repository. (not tested. I only tested the regular version)

git clone https://github.com/hackathonprojs/near-rust-helloworld

Setup Or skip to Login if in Gitpod

Install dependencies:

yarn

If you don't have Rust installed, complete the following 3 steps:

Install Rustup by running:

curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh

(Taken from official installation guide)

Configure your current shell by running:

source $HOME/.cargo/env

Add wasm target to your toolchain by running:

rustup target add wasm32-unknown-unknown

Next, make sure you have near-cli by running:

near --version

If you need to install near-cli:

npm install near-cli -g

Login

If you do not have a NEAR account, please create one with NEAR Wallet.

In the project root, login with near-cli by following the instructions after this command:

near login

Modify the top of src/config.js, changing the CONTRACT_NAME to be the NEAR account that was just used to log in. currently set to helloworld.gameofstake.testnet

…
const CONTRACT_NAME = 'YOUR_ACCOUNT_NAME_HERE'; /* TODO: fill this in! */
…

Start the example!

yarn start

To Test

cd contract
cargo test -- --nocapture

To Explore

contract/src/lib.rs for the contract code
src/index.html for the front-end HTML
src/main.js for the JavaScript front-end code and how to integrate contracts
src/test.js for the JS tests for the contract

To Build the Documentation

cd contract
cargo doc --no-deps --open