What does the following operator - (? do something : do something) mean?

Question

What does the following code do?

Tracker t = (trackerId == TrackerName.APP_TRACKER) ? analytics.newTracker(PROPERTY_ID)
                : (trackerId == TrackerName.GLOBAL_TRACKER) ? analytics.newTracker(R.xml.global_tracker)
                : analytics.newTracker(R.xml.ecommerce_tracker);

I did not get this question in the search query. Please clone it rather than marking it as a duplicate. — ARK, Jan 28 '15 at 21:31

score 1 · Answer 1 · answered Jan 28 '15 at 21:30

1

condition ? //block1 : //block2 is the same thing as if (condition) { //block1 } else { //block2 }

answered Jan 28 '15 at 21:30

Dave

1,784
2
23
35

1

Except the ternary operation can evaluate to something and thus be used in assignments, etc. – Biffen Jan 28 '15 at 21:33
That's of course correct. – Dave Jan 28 '15 at 21:37

score 0 · Answer 2 · answered Jan 28 '15 at 21:31

0

Your expression shall be a ? b : c. This means: If a, then do b. Otherwise do c.

What you have here is a nested version of this syntax.

answered Jan 28 '15 at 21:31

paolo

2,528
3
17
25

What does the following operator - (? do something : do something) mean?

2 Answers2