Short if statement usage

Question

In python i can do following:

return x or y

or

my_function(x or y)

if x != null or not empty will return or pass x else y.

My question:

There is way do this in java shorten then
return x == null ? y : x or

myFunction(x == null ? y : x)

I'm not even sure `x || y` is valid as an expression in _any_ python version, it's normally `x if x else y`. — Joachim Isaksson, Mar 27 '16 at 18:20
@JoachimIsaksson, you're right, it isn't, that is why I asked — Padraic Cunningham, Mar 27 '16 at 18:22
But that still doesn't help us try to figure out what your goal is in Java :) — Jason, Mar 27 '16 at 18:26
@Tany, maybe if you wrote valid python it might help, do you mean `return x or y`? i.e if x is Falsey return whatever y is? — Padraic Cunningham, Mar 27 '16 at 18:42

Kamakazi · Accepted Answer · 2016-03-27T18:58:45.377

I believe the ternary method is the most efficient and shortest. But, if you want to go further and shorten things up, you could just create a generic static or non-static method, depending on your situation, to validate the two objects. Then just return the validated method, instead of the ternary condition. Something like this for example.

//usage
Employee valid(Employee x, Employee y) {
    return v(x,y);
}

//generic method for validation
<T> T v(T o1, T o2) {
    return o1==null?o2:o1;
}

score 0 · Answer 2 · edited May 23 '17 at 11:51

0

Ok I think what you wanted to do is passing the resulting value from

x==null ? y : x

as argument to a function.

I found this on Stack Overflow: Short IF - ELSE statement . Maybe this will help.

In short: myFunction(x==null ? y : x); should work fine.

edited May 23 '17 at 11:51

Community

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1

answered Mar 27 '16 at 18:45

picatrix

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5

yes, but my question, there is way do it shorten than myFunction(x==null ? y : x) like in python – Tany Mar 27 '16 at 18:48

Short if statement usage

2 Answers2