45. Go - Atomic Write/Load Int64

Atomic lets write and load int64 without race conditions. Alternative to Mutex or if want to just increment ints.

package main

import (
    "fmt"
    "sync"
    "sync/atomic"
)

func main() {
    var counter int64

    var wg sync.WaitGroup
    wg.Add(100)

    for i := 0; i < 100; i++ {
        go func() {
            atomic.AddInt64(&counter, 1)
            wg.Done()
        }()
        //fmt.Println(counter)
        fmt.Println(atomic.LoadInt64(&counter))
    }

    wg.Wait()
    fmt.Println(counter)
}

// atomic.AddInt64(ADDRESS,INCREMENT)

increments/write to a variable safely


// atomic.LoadInt64(ADDRESS)

loads/reads a variable

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