Question

if((x == 5) || (x == 2)) {  
    [huge block of code that happens]  
    if(x == 5)  
        five();  
    if(x == 2)  
        two();  
}

So I’m checking for either 5 or 2. And there is a huge block of code that happens after either 5 or 2. The problem is that then I want to do different things depending on whether it is 5 or 2. I didn’t want to have separate conditionals for 5 or 2 for the huge block of code (duplicating it would be unwieldy). I also didn’t like the way I did it above because x is actually really long.

Is there a way to say something like:

if((x == 5) || (x == 2)) {  
    [huge block of code that happens]  
    if(first conditional was true)  
        five();  
    if(second conditional was true)  
        two();  
}  

I can always do it the way I did above. Just curious if such an option exists.

Answer 1

One way I can think of is basically to “alias” the longer boolean expressions in the if condition:

boolean expr1, expr2;

if (expr1 = (x == 5) | expr2 = (x == 2)) {  
    // huge block of code that happens
    if (expr1) five();
    if (expr2) two();
}

I used non short-circuiting operator to ensure expr2 gets assigned.