Learning golang using Go By Example

My record of me Trying to follow "Go By example", by eli

go by example.

Following eli bendersky’s gobyexample.com tutorial the idea is to capture only things that were not clear in the go tour.

for loops

there are no while loops in go. only for.
There are multiple ways to declare a for loop.

package main

import ("fmt")

func main(){
    i := 2

    // most basic type, with a single condition
    for i<=3{
        fmt.Println(i)
        i+i=1
    }

    // looping with initial/condition/after 

    for j:=7; j<=9; j++ {
        fmt.Println(j)
    }

    // looping infinitely (while loop)

    for n:=0; n<=5; n+={
        if n%2==0{
            continue // continues to the beginning of the loop
        }
        fmt.Println(n)
        
    }

}

if statements

There are no ternary if functions in go

Switch statements

Switch statements express conditionals across many branches.

package main

import (
    "fmt"
    "time"
)

func main() {

    i := 2
    fmt.Print("write", i, "as")

    //### basic switch

    switch i {
        // ^ this is the case that is to be tested

        case 1:
        //   ^ This is what is compared against the i
            fmt.Println("one")
        case 2:
            fmt.Println("two")
        case 3:
            fmt.Println("three")
        default:
    //  ^^^ This is a fallback    
            fmt.Println("unknown")
    }

    // ### commas to seperate multiple expressions in the same case.

    switch time.Now().Weekday() {
        case time.Saturday, time.Sunday:
        //   ^^^            ^^^^   these two are checked against the given thing.
            fmt.Println("weekend")
        default:
            fmt.Println("weekday")
    }

    switch

}