Elixir

Elixir - interpreted dynamic functional programming language inspired by Scala and Python. Available for PC.

REQUIERS JAVA RUNTIME ENVIROMENT!

The project is currently under development.

Full source code available here.

Key Features

Ternary Operator

		
			printf "Ternary operator"
a = 0
b = 1
printf (a ? "text1" : "text2")
printf (b ? "text3" : "text4")
		
	

Extended identifier variables

		
			`extended identifier variable` = 9
printf (`extended identifier variable`)

`(｡◕‿◕｡)` = 20
`ʕ•ᴥ•ʔ` = 30
printf(`(｡◕‿◕｡)` * `ʕ•ᴥ•ʔ`)
		
	

Maps

		
			map1 = {"key": "value"}
printf(map1["key"])
printf(map1.key)

map1["newkey"] = "newvalue"
map1[0] = "zero"
x = 400
map1[x] = [1, 2, 3]
printf(map1)
		
	

Syntax sugar ( '=' instead of reuturn operator )

		
			def sqrt(num) = num*num

for (i = 0, i < 6, i++) {
	printf("15 in square = " + sqrt(15))
}
		
	

Why Elixir ?

1. Elixir is written in Java which provides stability and high speed of work

2. Simple, no-nonsense syntax

3. Fast, and lightweight Interactive Shell !

Basics

Comments

		
			// Line comment
/* multiline
 comment
*/
printf /*inner comment*/ "Text"
		
	

Strings

Strings are defined in double quotes and can be multiline. Escaping Unicode characters is also supported.:

		
			str = "\n\tThis is
\tmultiline
\ttext
"
printf(str) //print statement
		
	

printf and printn operators are used to output text.

Types

Elixir types are:

• Number - numbers (integer, float)

• String - strings

• Array - arrays

• Map - objects (an associative arrays)

• Function - functions

Since Elixir is dynamic programming language, which means that explicitly declare the types is not necessary

		
			vx = 10 // integer
y = 1.61803 // float
z = "abcd" // string
		
	

If some function requires string as argument, but number was passed, then numeric value will automatically converts to string.

		
			x = 90
printf(x) // Ok, 90 converts to "90"
		
	

Loops

Example :

		
			while condition {
   body
}
		
	

Parentheses in condition are not necessary.

		
			i = 0
while i < 5 {
  printf(i++)
}

// or

i = 0
while (i < 5) {
  printf(i++)
}
		
	

Do-While Loop soon.

For Loop.

		
			for initializing, condition, increment {
   body
}

for (initializing, condition, increment) {
   body
}
		
	

		
			for i = 0, i < 5, i++
  printf(i++)

// or

for (i = 0, i < 5, i++) {
  printf(i++)
}
		
	

Functions definition 

To define function uses the def keyword:

		
			def function(arg1, arg2) {
  arg1++
}
		
	

Shorthand definition

There is short syntax fot function body:

		
			def repeat(str, count) = str * count
		
	

Which is equivalent to:

		
			def repeat(str, count) {
  return str * count
}
		
	

Default arguments

Function arguments can have default values.

		
			def repeat(str, count = 5) = str * count
		
	

In this case only str argument is required.

		
			repeat("*")     //  *****
repeat("+", 3) 
		
	

Default arguments can't be declared before required arguments.

		
			def repeat(str = "*", count) = str * count
		
	

Causes parsing error: ParseError on line 1: Required argument cannot be after optional

Inner functions

You can define function in other function.

		
			def fibonacci(count) {
  def fib(n) {
    if n < 2 return n
    return fib(n-2) + fib(n-1)
  }
  return fib(count)
}

printf(fibonacci(10))   //   55
		
	

Assertion

Example:

		
			def check(a,b) {
    assert(a + b == 0)
}
check(15,8)
		
	

Terminate Program

Example:

		
			def say() {
	printf("Hi!")
	terminate  //program will be closed
	printf("Goodbye!") // It's invisible
}

say()
		
	

#other #java #laungage