dyn

Highly dynamic and powerful scripting language

Example

print("Hello, world!")

Syntax Overview

Comments

// single line comment

/* block comment */

Arithmetics

You can perform basic arithmetics like addition, subtraction, multiplication, etc.

1 + 2
5 - 10
3 * 4
50 / 7
36 % 5

Variable declaration

Use let keyword to declare an immutable variable.

let x = 5
let y = x + 10
print(y) // 15

You can add ! to make the variable mutable.

let! a = 0
a = 5
print(a) // 5
a += 2
print(a) // 7

Conditional statements

Use if expression to execute a block based on conditions.

let x = 10
if x > 5 {
	print("x is greater than 5")
}

You can use else to handle the other case.

let today = "Monday"
if today == "Saturday" || today == "Sunday" {
	print("It's weekend!")
} else {
    print("It's weekday :(")
}

Loop

Use iter and of keywords to iterate over an array.

let friends = [
	"abiria"
	"andjsrk"
	"kangjun"
	"ensuta"
]

iter friends of person {
	print("Hello, " + person + "!")
}

Build

$ git clone https://github.com/abiriadev/dyn && cd dyn
$ cargo install --path ./crates/cli

Run REPL

$ dyn
# if you want to execute a script, pass the file path as an argument
$ dyn ./examples/hello.dyn

TODO

• REPL
• Closure
• LSP