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Description
Context: https://tour.golang.org/flowcontrol/7
The "}" closing brace of if
statement must be immediately followed by an else
statement if any. Writing else
on a separate line(like we do in Python, C, Java, etc) will generate a SyntaxError
in Go.
Example:
package main
import (
"fmt"
"math"
)
func pow(x, n, lim float64) float64 {
if v := math.Pow(x, n); v < lim {
return v
}
else { // misplaced "else" statement
fmt.Printf("%g >= %g\n", v, lim)
}
// can't use v here, though
return lim
}
func main() {
fmt.Println(
pow(3, 2, 10),
pow(3, 3, 20),
)
}
Output: prog.go:12:2: syntax error: unexpected else, expecting }