GOLANGdora

goland - "package XXX is not in GOROOT" when building a Go project - Stack Overflow

What is Blank Identifier(underscore) in Golang? What is Blank Identifier(underscore) in Golang? - GeeksforGeeks // Golang program to show the compiler // throws an error if a variable is // declared but not used package main import "fmt" // Main function func main() { // calling the function // function returns two values which are // assigned to mul and div identifier mul, div := mul_div(105, 7) // only using the mul variable // compiler will give an error fmt.Println("105 x 7 = ", mul) } // function returning two // values of integer type func mul_div(n1 int, n2 int) (int, int ) { // returning the values return n1 * n2, n1 / n2 } ./prog.go:15:7: div declared and not used // Golang program to the use of Blank identifier package main import "fmt" // Main function func main() { // calling the function // function returns two values which are // assigned to mul and blank identifier mul, _ := mul_div(105, 7) // only using the mu

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  https://golang.org/ ภาษา Go ตอน 1 ติดตั้ง และ Run Hello World