A small programming language with postfix notation using TypeScript and Deno.

Syntax

Postfix

In postfix for an operation of two arguments, you add two numbers to the stack, then the operator will pop the arguments off the stack. So adding 1 to 2 is the following.

1 2 +

Operators

• + addition
• - subtraction
• * multiply
• / divide

Built-in Functions

• sin sine function
• cos cosine function
• tan tangent function

Built-in Constants

• e Euler's number
• pi Pi

Equations

Unit-language can evaluate more complicated expressions too.

2 3 + 9 - 8 * sin 5 -

Running

deno run dev

Running Tests

deno test

Running list

deno lint

Testings Running