Gno by Example: Basic Realms

Gno by Example: Basic Realms - Hello

Before we dive in, let’s first study the differences between realms and packages. A realm is a specific instance of a smart contract written in the Gnolang programming language. On the other hand, a package contains functionalities and utilities that can be used in realms.
	`/// gnobyexample/hello/hello.gno package hello`
	`func world() string { return "world!" }`
Our first realm will print the classic “hello world” message.	`func Render() string { return "Hello, " + world() }`

Then, deploy the realm on our local gnoland.	`$ gnokey maketx addpkg gnobyexample \ > --pkgpath "gno.land/r/gnobyexample/hello" \ > --pkgdir "gnobyexample/hello" \ > --gas-fee 1ugnot \ > --gas-wanted 1000000 \ > --broadcast true \ > --chainid "dev" \ > --remote localhost:26657 OK! GAS WANTED: 1000000 GAS USED: 154037`
	`$ cd gno ...`
Run gnoland website on local env.	`$ ./build/website Running on http://127.0.0.1:8888`
Head to `http://127.0.0.1:8888/r/gnobyexample/hello` to see our deployed realm!
We can also call our smart contract using maketx call option	`$ gnokey maketx call gnobyexample \ > --pkgpath "gno.land/r/gnobyexample/hello" \ > --gas-fee 1ugnot \ > --gas-wanted 1000000 \ > --broadcast true \ > --chainid "dev" \ > --remote localhost:26657 --func "Render" ("Hello, world!" string) OK! GAS WANTED: 1000000 GAS USED: 70250`