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並前往https://www.reddit.com/r/Kotlin/comments/8k1885/why_cant_the_else_part_of_let_take_a_block/

Why can't the else part of `let` take a `{}` block? : r/Kotlin - Reddit

You can just use regular if statement and Kotlin compiler will automatically know that inside the if(doge != null) block, doge is not null, ...

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