Icarus

Icarus is an attempt at a completely typeless programming language.

Description

Variables

Each variable does not really have a type. Instead, they have multiple interpretations. For example, if you set a to 3, it could be interpreted as the number three, a string consisting entirely of the the character 3 (ASCII code 51), or perhaps a regular expression that checks for instances of the character 3, if I decide to implement regular expressions. Variables can be truthy or falsy. If one of a variable's interpretations is truthy, all of them are. Otherwise, they are all falsy. Anyway, setting or declaring a variable is easy; just do the following: a = 3

Falsy literals

• 0, "0", etc.
• ""

Operations

Operations

Operation	Description	Example	Evaluation of example
.	String Concatenation	"a"."b"	"ab"
+	Numeric Addition	1+2	3
-	Numeric Subtraction	1-2	-1
*	Numeric Multiplication	1*2	2
/	Numeric Division	1/2	0.5
**	Numeric Exponentiation	1**2	1
[]	Subscript (gets character in a string)	"Hello"[0]	"H"

Control Flow

Control flow is somewhat C-like.

if(condition1){
 //Code here only executes if condition1 is truthy
}else if(condition2){
 //Code here only executes if condition1 is falsy, but condition2 is truthy
}else{
 //Code here only executes if both condition 1 and condition2 are falsy
}

while(condition){
 //Code here repeats until condition is falsy
}

try{
 //Code here will try to execute
}catch{
 //If the code in the try block throws an error, the code here will execute
}

Functions

Functions are declared with the function statement, like so:

function functionName(parameter1, parameter2, ...){
 //Function code
}

Functions are not first-class variables.

There are also built-in functions, such as `print` and `input`.

Examples

Tests if a value is a number

a = input()
try{
 b = a + 1
 print("You entered a number")
}catch{
 print("You did not enter a number")
}