writing-realms.md

Write Realms

Arguments

Similar to Golang, variables can be assigned with names and data types.

package demo

func Hello(name string) string {
	return "Hello " + name + "!"
}

Although concrete data types of Golang are supported, avl packages must be used since map is unusable due to non-determinism.

Data Handling

Data handling in Gnolang works similarly to data handling in Golang.

package demo

var total int

func init() {
	total = 1000
}

func Add(nb int) int {
	total += nb
	return total
}

The code above globally declares an integer-typed total variable and sets its value to 1000. Then it changes its value using the Add() function, by adding the number passed as the argument.

Import

Importing in Gnolang also works similarly to importing in Golang.

package demo

import (
	"gno.land/p/demo/avl"
	"gno.land/p/demo/dom"
)

func Render(path string) string {
	thread := dom.Plot{Name: "Hello!"}
	thread.AddPost("Foo", "foo foo foo")
	thread.AddPost("Bar", "bar bar bar")
	return thread.String()
}

The sample code above imports the avl package and the dom package.

Access Modifier

In Gnolang, the distinction of access modifiers is based on the naming conventions of objects.

• Starting with an uppercase
  • Can be externally which means Public
  • Similar to public and external in Solidity
• Starting with a lowercase
  • Cannot be externally accessed which means Private
  • Similar to private and internal in Solidity