CODEWITHSUNDEEP
go
yasar
yasar

Reputation: 13758

How to concat a string and float64 in Go?

I am trying to solve this: http://tour.golang.org/#58

Here is what I have done:

#imports omitted
type ErrNegativeSqrt float64

func (e ErrNegativeSqrt) Error() string {
    return "Cannot Sqrt negative number: " + string(e)
}

func Sqrt(f float64) (float64, error) {
    if f < 0 {
        return 0, ErrNegativeSqrt(1)
    }
    # calculate z here...
    return z, nil
}
# main omitted

I have also tried e.String() and e.string() but those didn't work too.

Upvotes: 3

Views: 4269

Answers (1)

ANisus
ANisus

Reputation: 77985

Try using the fmt package

import "fmt"
...
return fmt.Sprint("Cannot Sqrt negative number ", float64(e))

Upvotes: 9

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