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mutable strings in go

June 27th, 2019

According to the Go language specification:

Strings are immutable: once created, it is impossible to change the contents of a string.

We’ll see about that.

data := []byte("yellow submarine")
str := *(*string)(unsafe.Pointer(&data))

for i := range data {
    data[i] = 'x'
    fmt.Printf("%s\n%s\n\n", string(data), str)
}

Try it out yourself.

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