Expression Miner (bruteforce) by joeytwiddle

function u(t) {

c.width=1920 // clear the canvas
for(i=0;i<9;i++)
x.fillRect(400+i*100+S(t)*300,400,50,200) // draw 50x200 rects

} // 122/140

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    u(t) is called 60 times per second.
    t: Elapsed time in seconds.
    S: Shorthand for Math.sin.
    C: Shorthand for Math.cos.
    T: Shorthand for Math.tan.
    R: Function that generates rgba-strings, usage ex.: R(255, 255, 255, 0.5)
    c: A 1920x1080 canvas.
    x: A 2D context for that canvas.

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joeytwiddle

remix of d/18737 by u/tomxor

function u(t) {

D=[5,4,7]
g=(n=3,s='')=>n?[...'X012345*/+-&|^~'].map(c=>g(n-1,s+c)):q(s)
q=E=>{try{D.every((Y,X)=>Y==eval(E))&&(S=E)}catch{}}
t||g();throw S

May 15 2020 5:51 AM UTC

}// 140/140

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Expression Miner (bruteforce)

u/joeytwiddle

Unfortunately I couldn't use alert(S) so I had to drop some numbers!
u/joeytwiddle

Tryn=4 and either D=[1,3,7] or D=[1,1,4,27] #unimproved
u/joeytwiddle

Rather than searching, it might be more productive to display/draw some of the unusual small expressions, so we can look for ways to use them in future


      u(t) is called 60 times per second.
      t: elapsed time in seconds.
      c: A 1920x1080 canvas.
      x: A 2D context for that canvas.
      S: Math.sin
      C: Math.cos
      T: Math.tan
      R: Generates rgba-strings, ex.: R(255, 255, 255, 0.5)

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