如何在扑镖中使用具有多种条件的三元运算符？

Question

如果使用“ OR”和“ AND”两个或两个以上条件，如何使用三元

    if(foo == 1 || foo == 2)
     {
      do something
      }
     {
      else do something
      } 

我想像使用它

  foo == 1 || foo == 2 ? doSomething : doSomething

Answer 1

如果您在dart中引用else if语句，则此三元运算符：

(foo==1)?something1():(foo==2)? something2():(foo==3)? something3(): something4();

等效于此：

if(foo ==1){
    something1();
}
elseif(foo ==2){
    something2();
}
elseif(foo ==3){
    something3();
}
else something4();

Answer 2

对于三个条件使用：

value: (i == 1) ? 1 : (i == 2) ? 2 : 0

Answer 3

尝试下面

(2 > 3)?print("It is more than 3"):print("It is less than 3");
////Prints It is less than 3 to the console