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kotlinlang

<@U028BLB5LG3> there are some small errors in the code examples in <https://www.47deg.com/blog/arrow-analysis-kotlin-compiler-plugin/>
• In the examples with the extension functions on `List&lt;Int&gt;` the dot is missing between the receiver type and the function name
• In the second extension function, `fun List&lt;Int&gt;.firstOrZero()` using `isNotEmpty()` the logic is the other way around (should be `if (this.isNotEmpty()) this.first() else 0`)

Looks good, but now the description of the function using `isEmpty()` has to be adjusted as well (2 lines above it still mentions `isNotEmpty()`) :wink: