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1. First gotcha with defer in Go First gotcha with defer in Go

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   package main

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   import "fmt"

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   func main() {

2. Second gotcha with defer in Go Second gotcha with defer in Go

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   package main

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   import "fmt"

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   func main() {

3. Fibonacci Closure Fibonacci Closure

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   package main

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   import "fmt"

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   // fibonacci is a function that returns