What is out keyword in kotlin

Question

I am not able to understand and I couldn\'t find the meaning of out keyword in kotlin.

You can check example here:

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Answer 1

Remember like this:

in is "for input" - you wanna put(write) something into it (so it's a "consumer")

out is "for output" - you wanna take(read) something out of it (so it's a "producer")

If you're from Java,

is for input, so it's like (consumer)

is for output, so it's like (producer)