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submitted 6 days ago by Sleepzy@feddit.it to c/programmerhumor@lemmy.ml

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[–] dev_null@lemmy.ml 3 points 3 days ago* (last edited 3 days ago)

It's a shorthand for writing this:

variable = if (input != null) input else default

This is equivalent:

variable = input ?: default

The answers confusing it with the ternary operator are wrong.