Came across this in code I'm working on

Question

Came across this line in a program I'm cleaning up:

 isFound = !isFound ? isFoundOnPost : isFound;

I tried to Google this, yieleded no results. I know this is not the best question but could someone explain what this is doing? Thanks!

http://stackoverflow.com/questions/10336899/what-is-a-question-mark-and-colon-operator-used-for — assylias, Mar 02 '15 at 09:42
@assylias yes. But answer is there. `This question already has an answer here:` — Ruchira Gayan Ranaweera, Mar 02 '15 at 09:48
@RuchiraGayanRanaweera The duplicate flag is for duplicate questions, not duplicate answers - see for example: http://meta.stackexchange.com/questions/85725/why-do-people-use-similar-answers-as-justification-for-closing-questions-as-dupl — assylias, Mar 02 '15 at 09:58

score 0 · Answer 1 · answered Mar 02 '15 at 09:40

This is use of ternary operator its syntax is

variable=(condition)?IfConditiontrueThisExecutes:IfConditionFalseThisExecutes;

it is somewhat similar to if-else , whenver the condition before ? evaluates to true the statement after ? gets executed otherwise statement after : get executed and variable on LHS is assigned that value based on which statement executed

Abimaran Kugathasan · Accepted Answer · 2015-03-02T09:46:26.037

0

It's called as Ternary operator. It is same as

if(!isFound) {
   isFound = isFoundOnPost;
} else {
  isFound = isFound; //No need, Just to make clear for you.
}

edited Mar 02 '15 at 09:46

answered Mar 02 '15 at 09:41

Abimaran Kugathasan

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Thanks for your clear explanation, I had never seen this style of code before! – Reginald Mar 02 '15 at 09:43

Came across this in code I'm working on

2 Answers2