golang fibonacci tour

Exercise: Fibonacci closure. Let's have some fun with functions. Implement a fibonacci function that returns a function (a closure) that returns successive fibonacci numbers (0, 1, 1, 2, 3, 5, ...). <

The directions say: "returns successive fibonacci numbers (0, 1, 1, 2, 3, 5, ...)." Many of these answers don't do that. Here's my solution: import "fmt" func fibonacci () func () int {. a, b := 0, 1 return func () int {. current := a a, b = b, a+b return current. func main () {.

I would make use of multiple assignment, reduce the length of identifiers, and remove that if statment: func fibonacci() func() int {. var a, b int. b = 1. return func() int {. ret := a. a, b = b, a+b. return ret.

import "fmt" // fibonacci is a function that returns // a function that returns an int. func fibonacci() func() int { a, b := 1, 0 return func() int { a, b = b, a+b // two assignment happens parallely, but if you enforce it sequentially, it won't work return a } } func main() { f := fibonacci() for i := 0; i < 10; i++ { fmt.Println(f()) } }

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Sqrt should return a non-nil error value when given a negative number, as it doesn't support complex numbers. Create a new type. and make it an error by giving it a. method such that ErrNegativeSqrt(-2).Error() returns "cannot Sqrt negative number: -2" .

A closure shares its state across calls. The following code implements the Fibonacci series from Tour of Go. https://tour.golang.org/moretypes/26. package main import "fmt" //...

11 12 func main() { 13 f := fibonacci() 14 for i := 0; i < 10; i++ { 15 fmt.Println(f()) 16 } 17 } 18 . View as plain text.

If you are looking to learn Go the suggested route is first via http://tour.golang.org): You all know what the Fibonacci series is. Write a package to implement it.

Implement a fibonacci function that returns a function (a closure) that returns successive fibonacci numbers (0, 1, 1, 2, 3, 5, ...).