Monthly Archives: November 2018

Here is an example how to decode base64 encoded strings https://play.golang.org/p/iojjUKwvZvn It uses encoding packages encoding/base64 and encoding/hex . package main import ( “fmt” “encoding/base64” “encoding/hex” ) func isAscii7printable(bytes []byte)(bool){ for _, b := range bytes { if b < … Continue reading →

Let’s explore characters frequency in the go string. Characters in go are in the format int32 – rune, and they can have any unicode value. Here is a simple go program https://play.golang.org/p/fbg7VXetxCg . package main import ( “fmt” “sort” ) … Continue reading →

Here is a simple duration loop go program https://play.golang.org/p/ly9U9EUr2of package main import ( “fmt” “time” ) func main() { duration := time.Second *10 fmt.Println(“Hello, duration loop “+duration.String()+” long”) t1 := time.Now() for t2:= time.Now(); t2.Sub(t1) < duration; t2 = time.Now(){ … Continue reading →

Rob Pike at Gopherfest on November 18, 2015 mentioned several thoughtful go proverbs, as you may see on this video. Here they are: Don’t communicate by sharing memory, share memory by communicating. Concurrency is not parallelism. Channels orchestrate; mutexes serialize. … Continue reading →

Printing struct https://play.golang.org/p/BvMIqF3Pmc9 package main import “fmt” type point struct { x, y int } func main() { p := point{1, 2} fmt.Println(“Printing struct point:”) fmt.Printf(” type %%T: %T\n”, p) fmt.Printf(” just values %%v: %v\n”, p) fmt.Printf(” +field names %%+v: … Continue reading →

Here is one way, how to add elements to array in go language, see https://play.golang.org/p/nCLX23ymRUM package main import ( “fmt” ) type MyRecord struct { Name string Phone string } var recA = MyRecord{Name: “Anna”, Phone: “123”} var recB = … Continue reading →

Go is fresh fast relatively new language. One of the key to utilize it’s power are interfaces. Here is example of the geometry interfaces. See https://play.golang.org/p/nQ_ylb2jXKS package main import ( “fmt” “math” ) //https://www.mathsisfun.com/area.html type geometry interface { area() float64 … Continue reading →