qlang

Qlang

Do you know the one best language in this world?

I believe mathematics is absolutely that one.

How can we deal something as great as mathematics in a discrete world?

Q-language is the answer.

Q lets you have a sense of mathematics using a keyboard, the same as you would with a pen.

+---Discrete world---+                    +------Mathematics-------+
|        Ruby        |                    |        axiom           |
|        TeX         |<------   Q  ------>|    Uncountable noun    |
|       Python       |                    |  real number topology  |
+--------------------+                    +------------------------+

Demo

The code below is input and output for the q-lang interpreter

(you can try it by qlang -i)

Differentiate

d/dx(cos(x))
=> ( - sin( x ) )

# You can omit parentheses

d/dx log(x)
=> ( 1 / x )

d/dy xy
=> ( x )

d/dx e^x
=> e ^ x

Integrate

S(log(x)dx)[0..1]
=> - oo

S(sin(x)dx)[0..pi]
=> 2.0

S(cos(x)dx)[0..pi]
=> 0.0

Limit

lim[x->oo] (1 + 1/x)^x
=> 2.7182682371744895

lim[x->0] 1/x
=> oo

Sigma

∑[x=0,10] x
=> 55.0

Matrix

(1 2 3; 4 5 6)
=> (1 2 3; 4 5 6)

(1 2 3; 4 5 6) + (1 2 3; 4 5 6)
=> (2 4 6; 8 10 12)

(1 2 3; 4 5 6) * (1 2 3)
=> (14 32)

Function

f(x, y) = xy
f(1, 2)
=> 2

How to use

Install qlang gem.

$ gem install qlang

Interpreter

$ qlang -i
Q:->

Use as native language

Compile into R

$ qlang -r foo.q

Compile into Ruby

$ qlang -rb foo.q

Compile into Python

$ qlang -py foo.q

Use as math template within other langs

class ExampleClass
  def example_method
    #your Ruby codes
    ......

I love mathematics.
  a = (1 3 4)
  # your Q codes
Q.E.D

  end
end

$ qlang -rb example.rb

class ExampleClass
  def example_method
    #your Ruby codes
    ......

    a = Vector[1, 3, 4]

  end
end

Contributing

Any PRs or issues are welcome. You can become a commiter, even if you only commit once.