v
\ {"+":[01],"-":[01],"*":[02],"/":[02],"^":[13]} "prec" =
\ {"+":[+],"-":[-],"*":[*],"/":[%],"^":[J]} "func" =
\ ["prec"`~F~$~$]kKp ["prec"`~F$~$]kKa [dnNEQ]kKn [2@dHNE~$]kKh
\ 0b "queue" = 0b "stack" =
            v                  =q@"queue"&~ <j*44             <
                      >>:c=Knv
> "> "oiSBq > l0E!v_Kn|^+~c. _ .cn "queue"` ^
                      >d" "E?v$>"stack"`V?v$"stack"`~&"stack"=^
            ^              $$<            > :2= :1= .1Kp .2Kp   .1Ka [Y][y]2b~H~$  g  ?v$"stack"`.1&"stack"=

λ ruby reticular.rb examples\shunt.ret
> 3 + 4 * 5
[3, 4, 5, "*", "+"]

function extractNumber(string){
    var dummy = document.createElement("div");
    dummy.innerHTML = string;
    var header = dummy.children[0];
    for(var i = 0; i < header.children.length; i++){
        var child = header.children[i];
        header.removeChild(child);
    }
    return header.innerHTML.replace(/.+(\d+)\D+$/, "$1");
}

> 3 ^ 3
27
> 5 / 3
1.6666666666666667
> 3 + 4
7
> 2342
2342
> 234 * 234234
54810756
> 3 - 1
(hangs)

v [part I.a: constructing the objects]
\ {"+":[01],"-":[01],"*":[02],"/":[02],"^":[13]} "prec" =
\ {"+":[+],"-":[-],"*":[*],"/":[%],"^":[J]} "func" =
v [part I.b: defining helper functions]
\ ["prec"`~F~$~$]kKp ["prec"`~F$~$]kKa [dnNEQ]kKn [2@dHNE~$]kKh ["func"`~H~$]kKf [dT"String"E]kKs
v   < [part II: repl stage]
\ 0b "queue" = 0b "stack" =
            v                  =q@"queue"&~ <j*44             <
                      >>:c=Knv
> "> "oiSBq > l0E!v_Kn|^+~c. _ .cn "queue"` ^
                      >d" "E?v$>"stack"`V?v$"stack"`~&"stack"=^

for(char i=0;i<256;)System.out.print(i++);