けんき => YSITD: function symmetric(x,y) {return x == y && y != x;} symmetric(new Proxy({},{get: function(){if(Array){Array=null; return true;}else{return false;}}}), false) TypeError: 'true' returned for property 'Symbol(Symbol.toPrimitive)' of object '[object Object]' is not a function #57bab0b6c4504dd36e5b00d5

けんき says to YSITD

function symmetric(x,y) {return x == y && y != x;} symmetric(new Proxy({},{get: function(){if(Array){Array=null; return true;}else{return false;}}}), false) TypeError: 'true' returned for property 'Symbol(Symbol.toPrimitive)' of object '[object Object]' is not a function

at Mon, Aug 22, 2016 3:58 PM